Ccs
[化] 中国化学会
🗣️ 情景例句
You should save some money in case of urgent need.
你应该存点钱以备不时之需。
How much ham did you want to buy?
你要买多少火腿？
Why? One difficulty is to construct the agreements.
为什么呢？困难之一是起草这些协议。