Farvitron
线振质谱计
🗣️ 情景例句
Excuse me, but may I ask how old you are?
对不起， 我能问一下你多大了吗？
Joy often comes after sorrow, like morning after night.
暮去必将朝至，苦尽常会甜来。
When will it be ready?
什么时候能准备好？