Monrolite
夕线石
🗣️ 情景例句
Where's my cap and gown?
我的帽子和长袍在哪里？
I invited him last Thursday.
我上个星期四邀请他。
When it has been decided where we are going to drill, we put up at the surface an oil derrick.
当确定钻孔地点后，我们就在那里竖起一个井架。