safety net

1. N-COUNT A safety net is something that you can rely on to help you if you get into a difficult situation. 安全保障

Welfare is the only real safety net for low-income workers. 福利是低收入工人們惟一真正的安全保障。

2. N-COUNT In a circus, a safety net is a large net that is placed below performers on a high wire or trapeze in order to catch them and prevent them being injured if they fall off. (馬戯團(tuán)襍技表縯使用的) 安全網(wǎng)