沙子

He could hear seagulls and feel the sand.

他能够听见海鸥的叫声，也能够感觉到沙子的存在。

He could hear seagulls and feel the sand.

他可以听见海鸥的声音和感觉到沙子。

900M3 thick granite tile finish (yellow rust litchi-China origin) bush hammered finish c/w 20mm screeding with average 50mm thick cement and sand mortar base; butt and jointed with cement and sand (1:3) mortar pointed in matching colored cement grout and laid on screeded bed

900立方米厚的花岗岩砖饰面（荔枝铁锈黄，中国原产地）剁斧石面，使用20毫米沙浆，平均50毫米厚的水泥砂浆基地；用水泥和沙子（ 1：3 ）砂浆对接和连接，匹配彩色水泥灌浆并浇注在刮平的基床上。

Q : What do you get if you come across a Scouser buried up to his neck in sand ?

当你看到一个利物浦人被沙子埋到了脖子，你会怎么想？

Also, there were present rishis from the four lands, who were as numerous as the sands of 20 Ganges.

此外，这里有来自四个地方的哲人出席，他们的数量有20条恒河沙子那么多。

The beach cleaning machine is also used once or twice a month to pick up glass and other foreign objects from the sand.

沙滩清洗机也是用一个月一次或两次接玻璃和其他外国物体从沙子。

To provide basic parameters of evaluating the biological safety of xenotransplantation from pig to human, ear tissues from 31 individuals were randomly collected from a Shazi Ling pig population. PCR and RT-PCR were performed to detect porcine endogenous retrovirus proviral DNA and mRNA respectively. The sensitivity of the PCR was evaluated using a positive control.

为评价从猪到人异种移植的生物安全性提供依据，从湖南沙子岭猪的保种群内随机采集31头个体的耳样组织，应用PCR和RT-PCR技术分别检测这些组织中内源性逆转录病毒（porcine endogenous retrovirus，PERV）的前病毒DNA和mRNA，并对PCR扩增的灵敏性进行评估。

The results showed PERV proviral DNA and mRNA could be detected in all 31 individuals by PCR and RT-PCR, respectively. env-A, env-B and env-C were only detected in 2 individuals, while in the other 29 individuals, only env-A and env-B but not env-C was detected. The quantity of DNA in PCR amplification of PERV genes should be more than 15 ng.

PCR和RT-PCR结果表明，所检测的31头沙子岭猪均带有PERV前病毒DNA，耳样组织中均有PERV mRNA表达，其中有2头个体携带 env-A、env-B、env-C 3种囊膜蛋白基因，而其余的29头个体只带有env-A、env-B 两种囊膜蛋白基因，未检测到env-C基因。

There was a good quarry of limestone on the farm, and plenty of sand and cement had been found in one of the outhouses, so that all the materials for building were at hand.

按说，庄园里就有一个质地很好的石灰石矿，又在一间小屋里发现了大量的沙子和水泥，这样，所有的建筑材料都已齐备。

He responded instantly: as a bunch of ostriches with their heads in the sand.

他立刻答道：它们就像一群把头埋在沙子里的鸵鸟。

As she looked at Warrington's manly face, and dark, melancholy eyes, she had settled in her mind that he must have been the victim of an unhappy attachment.

每逢看到沃林顿那刚毅的脸，那乌黑、忧郁的眼睛，她便会相信，他一定作过不幸的爱情的受害者。

Maybe they'll disappear into a pothole.

也许他们将在壶穴里消失