必要時(shí)的英文：
at a push
If it comes to the pinch
in necessity
on occasion

參考例句：
  • If appropriate, the environmental conditions shall be controlled and/or monitored.
    必要時(shí),環(huán)境條件應(yīng)予以控制或監(jiān)控。
  • If necessary, nylon, acrylic and polyester fibers may be bleached with sodium chlorite under acidic conditions.
    在必要時(shí),尼龍、丙烯腈、滌綸纖維可在酸性條件下用氯化鈉漂白。
  • They were ready to die, if necessary, for their country.
    必要時(shí)，他們愿為國捐軀。
  • We can put up ten people for the night at a pinch.
    必要時(shí)我們可以留宿十個(gè)人。
  • She can needle herself if need be.
    必要時(shí)她會給她自己打針的。
  • Fit transverse strut if necessary.
    必要時(shí)可安裝橫向支柱。
  • Repeat every few days as necessary.
    必要時(shí)每隔幾天重復(fù)一次。
  • Dr. Zomboss will not show himself until it is necessary.
    僵尸博士會在必要時(shí)出現(xiàn)。
  • To review and update as necessary and re-approve documents
    必要時(shí)對文件進(jìn)行評審與更新，并再次批準(zhǔn)
  • Where necessary, the people's court may entrust a people's court in another place with the investigation.
    人民法院在必要時(shí)可以委托外地人民法院調(diào)查。
push是什么意思：
v. 推；催促；逼迫；推進(jìn)；推行；擴(kuò)展，擴(kuò)大；增加
n. 推，推動(dòng)；奮進(jìn)，努力
  • That is pushing it.
    那是在推動(dòng)它。
  • Push is informal and is used for the selling of illegal drugs push
    是口語用詞,指出售違禁毒品
  • The sprouts have pushed up the earth.
    嫩芽把土頂起來了。
comes是什么意思：
n. 伴星；伴引血管
v. come的第三人稱單數(shù)
  • The bale will be coming.
    不幸就要降臨了。
  • Come on get with it!
    好啦，時(shí)髦點(diǎn)兒吧！
  • Illness comes in by mouth and comes out by it
    病從口入禍從口出
pinch是什么意思：
n. 捏，掐；能捏住或掐住的量
v. 捏，掐；夾痛；擅自拿走；逮捕
  • The pinched look of a hungry person.
    面如菜色。
  • to pinch; to nip; to cut with fingernails
    掐
  • I will help you in a pinch.
    有緊急情況我會幫助你。

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