“必要时”的英语可以翻译为：[医] P. r. n.，pro re nata，S. O. S.，S. op. s. ...

必要时可以把它当作武器.At a pinch it can be used as a weapon.必要时, 他们愿为国捐躯.They were ready to die , if necessary, for their country.他们不怕应对这些问题，也不怕必要时来一番激烈的争论。They are not afraid to tackle the issues or let the sparks fly when necess...