Undersurface
n. 下面, 底面\\na. 水面下的
🗣️ 情景例句
All right.
好。
My hobby is collecting coins.
我的嗜好是收集硬币。
By 12.01, those fluctuations will already have created small errors one foot away.
到12∶01时，那些波动就已经会在1英尺远的地方造成偏差。