Nadir
例子
The company 's profits hit their nadir during the financial crisis.
该公司的利润在金融危机期间达到了最低点。
02
天底, 最低点
the point on the celestial sphere directly beneath an observer, exactly opposite the zenith
例子
The satellite 's camera was configured for nadir viewing to capture vertical ground imagery.
卫星的相机被配置为天底视角以捕捉垂直地面图像。
