一次性
word C1- one-off (offer)
- one-time
- single-use
- disposable (goods)
From the library
每次收到外卖时，里面通常有塑料盒、塑料袋和一次性筷子。
只要顾客选择这个选项，就能减少一次性筷子和勺子的使用。
当你缓缓展开一幅长长的卷轴时，就如同亲自在山水之间漫步游历，因为画卷并非一次性完全呈现，而是随着双手的动作一点点显露真容。
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