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枱。
() (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