upwards

Compared meaning: moving in an upward direction (adverb).

比较义项：向上（方向副词）。

• up

  Up is the everyday, versatile word for upward direction and forms countless fixed phrasal verbs (stand up, wake up, look up) where upwards cannot substitute.

  up 是表示向上方向最常用、最基础的词，并构成大量固定动词短语（stand up、wake up、look up），这些地方不能换成 upwards。

  Stand up straight when the teacher walks into the room.

  老师走进教室时，请站直（stand up）。

• upwards 本词

  Upwards is a more literal and slightly formal adverb for physical movement in an upward direction; it does not appear in fixed phrasal verbs like 'stand up'.

  upwards 是更字面、略显书面的副词，专指物体在物理空间上向上移动，不用于像 stand up 这样的固定动词短语中。

  The kite drifted upwards until it vanished into the clouds.

  风筝缓缓向上飘去，直到消失在云层中。

Up and upwards both mean moving upward. Up is the basic, common word, used in many phrasal verbs like stand up and look up. Upwards is more formal and literary, describing only physical upward movement. Up's other meaning, like rising prices, is not compared here.

这两个词在表示“朝上的方向”时意思相近，但 up 是最基础、最常用的词,大量固定动词短语（stand up、wake up、look up）都靠它,upwards 则更书面、更字面,只单纯描述物理上的向上移动,不进入这类固定短语。up 的“增加/上涨”等其他义项（如物价 go up）这里不比较。