inwards

Compared meaning: toward or inside something (adverb).

比较义项：向里面，进入内部（副词）。

• in

  In is an extremely common, general particle paired with everyday verbs (come, go, put) to mean moving into or being inside a place; it is usually followed directly by the place and has no built-in opposite direction word.

  in是一个极为常用的通用小词，常与「来」「去」「放」等日常动词搭配，表示进入或处于某个地方的里面；它后面通常直接跟地点，本身没有固定的反义方向词。

  She put the keys in her bag before leaving the house.

  她出门前把钥匙放进了包里。

• inwards 本词

  Inwards specifically names the direction toward the inside or center, contrasted with outwards; it modifies verbs like open, fold or curve and never takes a place noun after it.

  inwards专门表示朝里面或朝中心的方向，与「向外」相对；它常修饰「打开」「折叠」「弯曲」等动词，后面不接地点名词。

  The old door opens inwards instead of outwards.

  这扇旧门是向内开的，而不是向外开。

In and inwards both point toward or inside something. In is a very common word, paired with verbs like come, go, or put, followed by the place. Inwards names the direction toward the inside, opposite of outwards, and modifies verbs like open, fold, or curve.

这两个词都表示朝里面或里面的方向，但用法不同：in是极为常用的通用小词，常与「来」「去」「放」等动词搭配，表示进入或处于某处里面；inwards则专门表示与「向外」相对的方向，常与「打开」「折叠」「弯曲」等动词搭配，后面不能再接地点名词。这里不比较in表示「流行、时髦」的义项。