throwaway /ˈθrəʊəˌweɪ/

• 1. 

  ADJ A throwaway product is intended to be used only for a short time, and then to be thrown away. 一次性的; 用完即弃的 [ADJ n]

  例：

  Now they are producing throwaway razors.

  他们正在生产一次性剃须刀。

• 2. 

  ADJ If you say that someone makes a throwaway remark or gesture, you mean that they make it in a casual way, although it may be important, or have some serious or humorous effect. (讲话、动作)不经意的; 随意的; 故作随意的 [ADJ n]

  例：

  ...a throwaway remark she later regretted.

  ...一句她脱口而出的评论，之后又后悔了。