Triangles
n. 三角形( triangle的复数形式 ); 三人一组; 三角铁（打击乐器）; 三角板
🗣️ 情景例句
... Oh, oh, I see.... Oh ... certainly.
……嗯 嗯 我知道了。……嗯……一定。
Could you tell me where is the first-aid room?
你能不能告诉我急诊室在哪里？
and it is only in the seas and rivers, and sometimes lakes, where mud and sit have been continuously deposited,
所以只有在泥沙不停淤积的海洋和江河里，有时在湖泊里，