✅ 同义词
🗣️ 情景例句
Then why are you and Daddy
那为什么你和爸爸
The typewriter is out of order.
这打字机出毛病了。
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。