in the presence of

• I was still shy and half paralyzed when in the presence of a crowd .
  当我置身于人群中的时候，仍然怕羞而且有些不知所措。
• He resolved upon a terrible demeanour in the presence of the dairy girl .
  他决定当着这牛乳场姑娘的面，装出恶劣透顶的态度。
• Birds cry plaintively before they die , men speak kindly in the presence of death .
  鸟之将死，其鸣也哀；人之将死，其言也善。
• Recently the reactivity of nitric esters in the presence of hydrazine has been investigated .
  人们近来研究了有肼存在时硝酸酯的反应性。
• If he stayed another minute, he would have been to look foolish in the presence of amelia .
  只怕他再呆下去，便会在爱米丽亚面前扫了面子。
• They wanted to determine how well the leaves and roots would grow back in the presence of lead .
  他们想确定叶和根在铅存在的情况下是如何恢复的。
• They remained in thought, like children in the presence of the incomprehensible things .
  他们象孩子那样，由于眼前难以理解的事情，仍然在苦苦思索着。
• It is not easy to see why they should occur in the presence of already existing particles .
  搞清楚为什么在已经存在粒子的情况下它们竟然出现是不容易的。
• Enucleated cells are prepared by removing cell nuclei in the presence of the drug, cytochalasin b .
  无核细胞是通过药物、细胞松驰素B把细胞核去掉制备的。
• By fighting his wife in the presence of customers and by buying bad meat he ruined his business .
  他当着顾客的面打老婆，老是买臭肉来卖，结果生意全给砸了。