ph.
1. The ditch filled up with mud.
沟渠为泥所淤塞。
2. He has filled up the tank with gas.
他已给油箱装满了汽油。
1. 填补;装满：fill out 填好,填写;使长大 | fill up 填补;装满 | find expression in 在...中表现出来
2. 装满：petrol n.石油,汽油 | fill up 装满 | battery n.电池组;炮兵连;炮组
3. 填满;装满;充满：fill out 填充;填出 | fill up 填满;装满;充满 | fill with 用......填充
2. fill up的解释
verb
1. become full
e.g. The pool slowly filled with water
The theater filled up slowly
Synonym: fill
2. make full, also in a metaphorical sense
e.g. fill a container
fill the child with pride
3. eat until one is sated
e.g. He filled up on turkey
Synonym: fill
4. fill or stop up
e.g. Can you close the cracks with caulking?
Synonym: close