Selagite
黑云粗面岩
🗣️ 情景例句
since this is so easy ....
既然那么简单……
It seems you are not very patient with me, Ruth.
露丝，你似乎对我不太有耐心。
There is only enough spring water to supply the needs of the houses, so we have to pump from the river for farm use.
泉水只能满足家庭生活用水，因此我们必须从河里抽水以用于农业生产。