Dissoconch
双壳贝, 盘形幼贝
🗣️ 情景例句
Don't tell any one,
别告诉别人，
Deeds, no words.
不要光说不练。
Instruments have been devised and can be so placed that all three elements can be recorded in different graphs.
已经设计出了一些仪器，它按照一定的安放方式就可测绘出这三种运动的曲线图。