维持的英文：
keep
maintain
preserve

参考例句：
  • Sustain an institution
    维持公共设施
  • The appeal court uphold the sentence.
    上诉法庭维持了判决。
  • Sustaining food
    维持体力的食物
  • There was too little food to support life.
    食物太少，难以维持生命。
  • The heart performs a vital bodily function.
    心脏起着维持生命的重要作用。
  • Keep the pressure up till you have blown the occlusion out.
    维持压力直到把堵塞排除。
  • He has barely enough money to live on.
    他的钱仅够勉强维持生计。
  • Food, clothing and shelter are needful for the maintenance of health.
    衣、食、住是维持健康所必需的。
  • They could hardly make both ends meet and their debts were piling up.
    他们简直没法维持生活，因而债台高筑。
  • George has to keep his nose to the grindstone to support his family.
    乔治必须辛勤地工作以维持家庭生活
keep是什么意思：
v. 保持，处于；继续，重复；使耽搁；抚养；履行
n. 生活费，生活必需品
  • That news will keep.
    那个消息留待以后再宣布。
  • They keep a shop.
    他们经营一家商店。
  • How are you keeping?
    你最近还好吧？
maintain是什么意思：
v. 保持，维持；支持，抚养；保养，维修；坚持
  • maintainable adj.
    可维持的；主张的
  • motor maintainer
    自动养路机
  • blade maintainer
    单刃养路机
preserve是什么意思：
v. 保护；保存；维持；腌
n. 蜜饯；保护区；禁猎地
  • To make into a confection or preserve.
    把…制成甜食或罐头
  • It did not canned or otherwise preserved.
    它没有装罐或者用其他的方法保藏。
  • I preserved ginger in syrup.
    我用糖浆腌制姜。

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