GbEng
猴子头向下倒挂在树枝上。 The monkey was hanging head downwards from the branch.
下的处于下方的或向下生长的 Located beneath or directed downward.
第二天一早小船就沿河向下游驶去了。 The boat dropped down the river early the next morning.
天底天球上,在观测者垂直向下的一点,与天顶完全相对 A point on the celestial sphere directly below the observer, diametrically opposite the zenith.