bu-by

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bu

• busy adj 忙的
  • be busy doing sth 忙于做某事
  • be busy with sth 忙于某事
  • business 事物；生意；商业
    • businessman 商人
    • It's none of your business.
• but
  • not only... but (also)...不但...而且...
  • not..but...不是...而是...
  • 就近原则
    • not only... but also...
    • either...or...
      • 二者择一的；要么...要么...
    • neither...nor...
      • 既不是...也不是...
• by prep.
  • 靠近,在...旁边
    • a house by the river.
  • 方式
    • I will contact you by letter.
    • by air,by bike, by sea
  • 表被动（被）
    • It was done by me.
  • 不迟于
    • by the end of ... 到...末为止