Bromlite
碳酸钙钡矿
🗣️ 情景例句
How ofter have met with our competitors?
你多久遭遇我们的竞争对手一次？
It's such a nice change.
真实令人高兴的转变。
These friendly dogs, which were first brought from Asia, were used as watchdogs even in Roman times.
那些最先从亚洲引进的狗，待人友好，早在罗马时代就给人当看门狗了。