he told them to be on the lookout for dangerous gas.
他告诉他们小心有害气体。
we kept a sharp lookout for animals and saw several waterbuck.
我们仔仔细细地寻找动物, 见到几只非洲大羚羊。
See main entry:lookout
英汉双解词典包含131075条英汉词条，基本涵盖了全部常用单词的翻译及用法，是英语学习的有利工具。