Spacewalks
n. 太空漫步, 太空行走；航天舱外活动
🗣️ 情景例句
As you please. I'm ready.
请便。我准备好了。
The police crept up from behind and took the gangster by surprise.
警察悄悄从背后绕过去，出其不意地将歹徒逮捕。
Some of the bigger firms are engaged in researches which are of such general and fundamental nature that it is a positive advantage to them not to keep them secret.
某些大公司进行的研究属于一般和基础性的研究。因此不保密对他们才有利。