with infinitive she became popular, and was at a loss to know why
她变得颇受欢迎, 却不知为何如此
he was at a loss for words.
他不知该说些什么。
a railway running at a loss.
亏损经营的铁路。
See main entry:loss
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。