1、switch off

关掉，关上(电灯等)

She switched off the coffee-machine.

她关掉了咖啡机。

Glass parked the car and switched the engine off.

格拉斯停好车，熄了火。

失去兴趣;不考虑;不再想着;不再担忧

Thankfully, I've learned to switch off and let it go over my head.

谢天谢地，我已经学会了释然，随它去吧。

You may find you've got so many things to think about that it's difficult to switch off.

你会发觉需要考虑的事情太多了，想不操心都难。

2、vulnerable

脆弱的;易受伤害的

Old people are particularly vulnerable members of our society.

老年人是社会中尤为明显的弱势群体。

易感染（某种疾病）的；易患病的

People with high blood pressure are especially vulnerable to diabetes.

有高血压的人尤其易患糖尿病。

Plants that are growing vigorously are less likely to be vulnerable to disease.

生命力强的植物不容易得病。

易受伤害的;易受影响的

Their tanks would be vulnerable to attack from the air.

他们的坦克易受到空袭。

a table showing which cars are most vulnerable to theft.

易被盗车辆一览表