Single packing . f illing, packaging in one operation.
单支包装，充填、包装一次完成。
You should be illing to give up some of your spare time to serve the students.
你要乐意贡献一些业余时间为同学们服务。
If you get the job, you should be illing to offer some of you spare time to serve the students.
得到这份工作后，你要乐意贡献一些业余时间为同学们服务。
If you get the job, you should be illing to offer some of you spare time to serve the students.
得到这份工作后，你要乐意贡献一些业余时间为同学们服务。
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