Sillar
n. [地]未固结熔灰岩, 未固结火山凝灰岩
🗣️ 情景例句
Those are the rules and regulations, and we have to abide by them.
这些就是这儿的规矩， 大家都应该遵守。
How long will you remain in the United States?
你将会在美国逗留多久？
Ok. We can stop here for a time.
“那好吧！我们可以在这里停一下。”