[only before noun] travelling very fast; sent or delivered very quickly快速的；快递的◆an express bus快速客车◆The parcel was sent by express mail.这个包裹以快邮寄出。◆We offer an express delivery service.我们提供快递服务。(about a piece of business, etc.) that can be done very quickly（某项业务）快速的◆express clearance through customs快速通关◆Use the express checkout if you are buying five items or fewer.购买五件或以下商品请用快速结账柜台。 (Law 法律) (about a part of a contract) that is stated or put in writing and agreed（合同条款）明确的◆It was an express term of the contract that their employment was for a period of four years.他们的雇用期为四年，这是合同中一条明确的条款。  ➡  implied