Backwall
[电] 背墙
🗣️ 情景例句
Bye, see you later.
后会有期。
Dinner is on me.
晚饭我请客。
many of them serious and senior scientists---- who dream of sending people to it.
其中的不少人是认真和资深的科学家，他们一直梦想着把人送上火星。