Solabar
多硫化钡
🗣️ 情景例句
OK, OK- just try to calm down, sir.
好，好，请冷静下来，先生。
When is grandparents' wedding anniversary?
祖父母的结婚周年是什么时候？
My grammar is improving, but I find idioms and useful expressions hard to learn.
我的语法在进步，但我发现习语和有用表达很难学。