A prolonged drought had necessitated the introduction of water rationing.由于持续干旱, 有必要对用水实行配给了。

Frank was carrying out fuel-system tests which necessitated turning the booster pumps off.弗兰克在进行燃料系统检测, 这就需要关闭增压泵。

It would necessitate strong measures.针对此必须采取强有力的措施。

He poured her some wine, a gesture that necessitated him moving to the other side of the room.他特意走到房间的另一边给她倒了些酒。

Jack had suffered several sudden illnesses, sometimes necessitating him being admitted to hospital.杰克好几次突然病倒, 有几次不得不被送进医院。