查询词典 couldn't

Ross-Ibarra defends his estimate by explaining that his team couldn't age the bushes using radiocarbon dating, because they couldn't find any old pieces of wood.

Ross-Ibarra为他的估计做出的辩护是他的团队不能使用放射性碳测试年龄的方法来确定这些灌木的年代，因为他们无法找到旧的木头片。

"I couldn't' throw back, I just couldn't throw back," he said.

我的意识很清晰，眼前的一切都很清晰。

We heard them come along towards the crick, but couldn't see them; they seemed to stop and fool around a while; then, as we got further and further away all the time, we couldn't hardly hear them at all; by the time we had left a mile of woods behind us and struck the river, everything was quiet, and we paddled over to the towhead and hid in the cottonwoods and was safe.

从声音听来，他们是往小河浜来的，不过我们没有看到他们。仿佛他们在那里停了下来，转了一会儿。在这个时间里，我们愈走愈远，后来就根本听不见他们的声音了。等到我们离林子一英里多路，驶进了大河，一切平静了下来。我们划到了沙洲那边，躲到了白杨树丛里，就平安无事了。

Marc: I couldn't do it. I couldn't triangulate the signal.

我做不到，我没法三角定位信号。

It meant I couldn't look like a total zero, but I couldn't upstage her either.

意思是我不能穿得太普通但也不能抢了她的风头

And I knew then I couldn't go on, couldn't violate his trust.

这时候，我知道我不能再继续前进了，不能辜负他对我的信任。

They couldn't get equally treated and had no access to those well-conditioned and high-paid working posts. They had to undertake such messy, low-paid and painstaking jobs as building, cleaning, household service, safety guarding. Further more their status of rural residence never changed and their sons and daughters couldn't enjoy equal treatment on education, social security, shopping and etc like those of the town residents.

但是，农民工在城市并不能享受平等待遇，他们无权进入那些工作条件好、收入高的就业岗位，而只能从事建筑、清洁、家政服务、保安之类脏苦累的活，而且其农村户口的身份仍然没有改变，在子女受教育、社会保障、购物等方面不能与城镇居民享有平等待遇。

"We couldn't do our mission without the Guard or Reserve — just flat couldn't do it," the wing commander from Overland Park, Kan., said.

"没有护卫队或者是预备队，我们不能完成我的任务——至少不能很好的完成任务，"来自堪萨斯州Overland Park的联合部队指挥官说。

Autarch couldn't .party also couldn't .

独裁者不能，政party也不能。

The hybrid between Brachymystax lenok and Hueho taimen were not a live in the past 2 years. However, the fertility and eyed rate of BH were significantly higher than that of HH and BB (P.05), while the hatching rate were significantly lower (P.05). The larvae died within 1 to 2 hours after hatching. It was observed that the tail of yolk-sac larve couldn't stretch around the yolk, and there were hyperemia in the middle and posterior segment of the tail. The reason why the hybrid between Brachymystax lenok and Hucho taimen couldn't snrvive might was the karyoplasms of the gametes from Brachymystax lerwk and Hucho taimen by distant hybridization were not compatible.

细鳞鲤×哲罗鱿的杂交经过2年多批次实验均未得到成活杂交子代，但在胚胎发育阶段BH的杂交受精率、发眼率均显著高于双亲自繁对照组(P.05)，但其孵化率显著低于双亲对照组(P.05)，BH杂交子代在破膜后1~2h内即死亡，刚破膜的仔鱼尾干中后段至尾鳍部分盘绕于卵黄囊表面不能伸展，且所有破膜仔鱼的尾干中后段均存在充血点，本研究认为，这种反交［细鳞鲑×哲罗鲑］子代不能成活的原因可能是由远缘杂交受精卵核质不相容所导致。

Do you know, i need you to come back

你知道吗，我需要你回来

Yang yinshu、Wang xiangsheng、Li decang,The first discovery of haemaphysalis conicinna.

1〕 杨银书，王祥生，李德昌。安徽省首次发现嗜群血蜱。