Planorbidae
[医] 扁卷螺科
🗣️ 情景例句
He's been here for years, he should know the ins and outs of the job by now.
他在这里已经好多年，现在理应熟悉各方面的工作了。
I asked him a lot of questions.
我问他很多问题。
Some children are coming out of the building.
一些孩子正从楼里出来。