She was at a loss over mechanical graphing, calculus, and other courses.

面对机械制图、微积分以及其他一些课程，她完全不知所措。

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Camilla was at a loss over what to buy for Charles - he is the man with everything.

卡米拉一直很头疼要送查尔斯什么生日礼物——他什么都不缺。

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By the mid-1980s Americans had found themselves at a loss over their fading industrial competitiveness.

到了80年代中期，面对其日益衰退的工业竞争力，美国人感到不知所措。

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It said youth crime was up more than 10 percent in the community since January and that officials were at a loss over what to do.

NPR: Violence Overshadows Upcoming French Elections

The French government has seemed at times to be at a loss over how to react to the violence, which is arguably the most serious challenge to its authority since the student riots that rocked Paris in 1968.

ECONOMIST: A wounded nation resorts to extreme measures | The

The MAG has designed an assessment method, based on following a person's weight loss over a six-month period, to identify whether people are at risk of malnutrition.

BBC: Many hospital patients are malnourished