A flat, folded paper container, especially for a letter.
信封扁平，装折叠纸的容器，尤其用来装信。
An envelope is a flat paper container used to send a letter.
信封是一种扁平的容纳物，用来送信的。
The traditional Chinese lantern is an open paper container with a candle inside.
中国传统的灯笼就是用纸做成一个顶部开口的容器，中央放上燃烧的蜡烛。
A container vehicle routing problem with working time constraint load is studied in this paper.
研究一类带工作时间约束的集装箱专用车辆调度问题的混合禁忌搜索算法。
A container vehicle routing problem with working time constraint load is studied in this paper.
研究一类带工作时间约束的集装箱专用车辆调度问题的混合禁忌搜索算法。
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