Supporters say open source software is more secure, cheaper tobuy and maintain and easier to customize.
拥护者认为开放源代码软件更安全，购买价格及维修成本也更为低廉，并且更容易定制。
《柯林斯英汉双解大词典》
2
Now he finds immigrant craftsmen gathered in abundance outside his store in the early morning, waiting for it toopen so they can buy supplies for the day's work as contractors.
现在他发现，很多移民工匠一大早就聚集在他的店外等着开门，就能以合同工的身份购买日常用品。
3
“App Exchange is an open marketplace tobuy or sell apps and underlying technology.