Faceup
adv. 面部朝上地
🗣️ 情景例句
and I think he believes
而我认为他相信
Just a second. I'll have to check.
等一等。我得查一查。
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。