✅ 同义词
🗣️ 情景例句
What did I do with them?
我把它们放在哪儿了？
She is very fed up about it.
她对此非常不满。
for fear the agents of other firms should be able to trace the kind of research they are likely to be undertaking.
他们生怕别的公司的情报人员据此摸到他们可能要从事的某项科研项目。