if necessary

汉语翻译

例句：

1. If necessary they will go to the authorities themselves to press the demand.
   如果必要，他们将自己去找当局，敦促他们接受这项要求。
2. If necessary, I'll be glad to run you about.
   如果需要，我们乐意用汽车接送你。
3. The emergency services stand (ie are) ready to help if necessary.
   紧急救难处随时可以驰援。
4. Be kind to your mother-in-law, and if necessary pay for her board at some good hotel.
   对岳母要亲切，必要时，请她住进一家上好的酒店吧。