飞行员在起飞前检查了燃料舱的油量。

The pilot checked the fuel level in the ___bunkers before takeoff.

战争期间，平民们被疏散到地下掩体躲避空袭。

During the war, civilians were evacuated to underground ___bunkers to shelter from air raids.

高尔夫球手必须小心避开沙坑，否则会增加击球难度。

Golfers need to avoid the ___bunkers or they will make their shots more difficult.