Cdw
abbr. 电荷密度波（Charge Density Wave）；车辆碰撞险（Collision Damage Waiver）
🗣️ 情景例句
And here he is--Popo the Clown.
这位就是小丑Popo。
That's really something.
真了不起。
Our knowledge of the oceans a hundred years ago was confined to the two-dimensional shape of the sea surface and the hazards of navigation presented by the irregularities in depth of the shallow water close to the land.
100年前，我们只知道海洋是二维平面形的，以及靠近陆地浅水区的深浅不一能给航行带来危险。