Think of bailing out a boat with a hole in it. You can bail and bail, but it won't do anything for the leak.

好比一条有洞的船，想将里面的水舀干，却不去堵漏的话，无止境地舀也无济于事。

youdao

The leak could come from a poor fit between the mask and the user's face, or from a crack or hole somewhere on the mask.

漏气可能是由于穿戴着脸部和面具大小不合适，或者面具上有裂缝或漏洞。

youdao

The leak detection hole axis should pass the middle of two neighboring studs clearance holes.

检漏孔中心线应对两相邻螺柱通孔跨中。

youdao

The pressure in the capped-off well could blow a new hole in it, letting oil and gas leak out through the seabed.

ECONOMIST: BP and the gulf

But Tepco said melting fuel rods had created a hole in the chamber, allowing 3, 000 tonnes of contaminated water to leak into the basement of the reactor building.

BBC: Japan nuclear: Tepco halts Fukushima cooling plan