查询词典 crossing-over

Whoever defrauds people, in the name of labor export and economic and trade exchanges or for other reasons, of their exit documents such as passports and visas through fraud and deception for use in organizing people in the secret crossing of the national boundary border

以劳务输出、经贸往来或者其他名义，弄虚作假，骗取护照、签证等出境证件，为组织他人偷越国境使用的

They disembarked in Amsterdam after crossing the Atlantic.

他们横穿大西洋后在阿姆斯特丹上岸。

After finding out the king's intention, the leader felt sad, self-reproached and contrite :"It's my careless fault which led to all of us crossing into the royal garden and got encaged. As soon as the king sees that we are fat enough, we will be killed, what should I do?...."

鸟王知道国王的企图后，难过地自责忏悔：「因为我的疏忽，带领整个鸟群误入国王的园子里，而使大家身陷鸟笼之中；再过不久，国王看到鸟群长肥了，每一个同伴都会丧命，现在我该如何是好啊？

Where urban traffic infrastructures crossing rivers or gulfs are to be built, it is common to make decisions between the bridge alternative and the underwater tunnel alternative.

当城市交通需要穿越江河海湾时，通常是在桥梁与水下隧道方案之间做出选择。

The first half of the river crossing seems manageable, just, but then, watch this, the SUV has water rising to way above its wheels and it hobbles across – a clear sign that large rocks are underneath.

河的前半段似乎还能对付，但说时迟那时快，注意看，河水一下子漫过了这辆运动型多功能车的车轮，它在河水中蹒跚而行，很明显水下有些大石头。

You don't simply look left and right for impending cars. You look up and down, in and around. Your best bet is to find someone else who is making the same attempt at crossing the street. You latch onto them and away you go through the maze of honks and wheels to the other side, to safety.

你不仅要左看右看躲开过往的车辆，而且也要上上下下、里里外外地环顾，为了以防碰撞，其实你最好的方法是找一个也需要横过马路的行人，然后紧随着他穿过混着汽车鸣笛声和滚滚车轮的街道。

According to Griffing's method 1, diallel crossing was built and CA was analyzed. Variance analysis showed that there were the greatly significant difference among the both of GCA in inbreeds and SCA in crosses, respectively. The high GCA of 18-599 and 18-599 and the low SCA variance of their crosses showed the strong and stable heredity on the both characters. Taking them as parents, the generations with high and stable induction and regeneration will be gotten.

2选用在配合力、抗病性、农艺性状等玉米杂交育种性状与幼胚培养胚性愈伤组织诱导率和胚性愈伤组织绿苗发生数等转基因工程育种性状都表现相对十分优异的18-599、18-599和综31等3个自交系，以及杂交育种性状表现优良、但转基因工程育种性状表现极差的A318，P138和R15等3个自交系为亲本，按照Griffing方法1组配双列杂交，进行Griffing的配合力分析。

ABSTRACT It is because that the excellent acceptors for maize transgenic engineering are insufficient in our country, especially in the southwest mountain areas of china and hereditary variation regularity for the two characters such as efficiency of embryonic callus induction and number of regenerating plant (these two characters were abbreviated to the nduction efficiency and number of regenerating in the following of the paper, respectively), which hint the maize culturing capacity, is not very clear. Therefore, aiming at picking out superior acceptors, we had made systematic researches on the two characters with combing traditional quantitative-character genetic analyzing methods such as single-factor genetic mating design, diallel crossing genetic design, genetic effect analyzing method and the modern molecular locating method such as QTLs'. The main results are followed.(1) 50 superior inbred lines and about 30 crosses in our country, especially in the southwest of China were used for identifying and selecting the superior genotypes in the above two investigated characters under the same culturing condition in 2000 and 2001. There was very significant difference among the genotypes in the both characters. But the two characters were not certainly related. Some genotypes such as 18-599 and 18-599 were very good in them. For some ones such as zong 31, induction was higher than 18-599 and 18-599 in the efficiency, but it was only 1/3 to the later in regenerating number. In some genotypes such as S37, R08, R15, P138, A318, induction efficiency was just about 3% and scarcely any regenerating plants were got. On the whole, hybrids acted better than inbreeds in the both characters.(2) Two kind of inbreeds were selected as parents of the Griffing's method 1. 18-599 and 18-599 and the inbred line zong 31 are one kind because they are not only superior in the characters of maize cross breeding, such as CA, resistance to disease and the important agricultural characters, but also excellent in transformation characters as the induction and regeneration.

针对我国、特别是西南山地所需玉米转基因工程育种优良受体极为匮乏和反应玉米幼胚培养能力的2个主要性状，即玉米幼胚胚性愈伤组织诱导率和胚性愈伤组织绿苗发生数的遗传变异规律十分不清楚的实际情况，本研究从筛选玉米转基因工程所需要的优良受体入手，采用单因素遗传交配设计、双列杂交遗传交配设计、世代基因效应等传统数量性状分析方法，以及现代分子标记定位主效QTL分析方法，对玉米幼胚胚性愈伤组织诱导率和胚性愈伤组织绿苗发生数等2个性状进行了较为系统的分析研究，取得以下主要研究结果：(1)于2000年和2001年通过对我国、特别是西南地区近50份优良自交系和近30个杂交组合，在相同培养条件下，对幼胚培养胚性愈伤组织诱导率和胚性愈伤组织绿苗发生数等2个幼胚培养能力性状进行了筛选与鉴定，发现玉米不同基因型具有完全不同的幼胚培养胚性愈伤组织诱导率和胚性愈伤组织绿苗发生数，但幼胚培养胚性愈伤组织诱导率与胚性愈伤组织绿苗发生数并不具有必然的相关关系，有的基因型，如自交系18-599和18-599在胚性愈伤组织诱导率和愈伤组织绿苗发生数等2个性状都表现相当优异；有的基因型，如自交系综31，仅幼胚培养胚性愈伤组织诱导率性状表现高于19-599和18-599，但在胚性愈伤组织绿苗发生数这一性状则与它们有相当大的差距，仅为19-599和18-599的1/3左右；有的基因型，如S37、R08、R15、P138、A318等玉米自交系不仅幼胚培养胚性愈伤组织诱导率很低，平均仅在3％左右，而且胚性愈伤组织绿苗发生数表现也很差，基本上没有分化成苗。

When the multiple-dimension speed space intertwines, continuous Speedscape produces multiple layers of different crossing modes, and become the available operable strategies in case project.

当多重层面的速度空间交织在一起时，连绵不断的速度空间产生了多重层面的不同的交叉方式，成为了在个案项目中实践的多种可选择的策略。

That pitiful mewing really pulled at my heart,and I found myself crossing the street to try to find her.

可是我刚要上车，又听见它喵喵叫。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。