呼吁的英语翻译

呼吁:[ hū yù ]
1.call on
2.appeal
3.appeal (to)
例句与用法:
1.这位人道主义科学家呼吁改善穷人的生活条件.
The humanitarian scientist called on the improvement of the poor's living condition.
2.警方呼吁目击者挺身而出.
Police have appealed for witnesses to come forward.
3.千百万人响应救灾呼吁而慷慨解囊.
Millions of people gave freely in response to the famine appeal.
4.警方向群众呼吁不要惊慌.
The police appealed to the crowd not to panic.