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1. 向后
   She looked backwards when she heard someone calling her.

   当她听见有人叫她时，她向后看了一看。

2. 倒，逆
   The teacher called the roll backwards.

   老师逆着顺序点名。

3. 往回，向原处
   The ball rolled backwards.

   球往回滚去。

adv.

1. in the direction of one's back.
2. back towards the starting point.
3. in reverse of the usual direction or order.
   ▸towards the past.
   ▸towards a worse state.