Retainment
保持\\n保留\\n记住\\n聘请（retain的名词形式）
🗣️ 情景例句
A little further back, Tom.
再往后一点 Tom。
I haven't the slightest idea.
我一点儿都不知道。
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。