We topped up the water tanks.

我们重新把水箱添满了。

《柯林斯英汉双解大词典》

B: Here, use mine. I topped up my phone this morning.

B：给，用我的吧，我今早刚刚充了。

youdao

On more than three occasions in the last month I have had to request that my pint be topped up to a full measure.

上个月就有不止三次我要酒保给我的酒要添满。

youdao

Dan Trewin said the rain had topped up river levels already high from Wednesday's rain.

BBC: West Midlands: Weather damage clear up begins

The sums are usually less than mainstream benefits, though, and cannot be topped up legally by working.

ECONOMIST: Migrant children

The accounts of low-income workers would be topped up by taxing the accounts of the better off.

ECONOMIST: Against the day when you lose your job