Mercuroammonium
亚汞代铵(基)
🗣️ 情景例句
There are several tours of the Grand Canyon.
到大峡谷有好几个旅游团。
She hesitated about what to do next.
他对下一步干什么拿不定主意。
Excuse me. What's that over there?
请问，那边是什么东西？