beneath under

beneath  在下；向下

: in or to a lower position

The sun is now beneath the horizon .
太陽此刻落到地平線下了。

As we flew over the mountains we could see
that there were snowy peaks beneath .
我們飛過群山時看到了底下被雪覆蓋著的山巔

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under  在……下面，在……下方；在……裡面

: in or into a position that is below or beneath something;
 especially : in a position that is below the surface of water
: in a forward direction that passes below something
: less than an expected or stated number or amount

What are you wearing under your coat ?   你外套裡面穿什麼？

They were playing chess under the tree .   他們在樹下下棋。

The plan is still under discussion .   這個計畫尚在討論中。