不过，从事故发生率来看，相对历史水平，飞机安全系数依旧很高。

Accident data indicates, though, that flying remains safe by historical standards.

youdao

不过，从事故发生率来看，相对历史水平，飞机安全系数依旧很高。

Accident data indicates, though, that flying remains safe by historical standards.

youdao