而单这一点便足够让他们撑过这全部的520天。
And that alone may be enough to get them through all 520 days.
电视机所需要的全部修理费用都因为有保修单而免收了。
All of the repairs needed for the television set were covered by its guarantee.
尤其当一门新课开始的时候，一张张阅读书目单便不期而至，他们不知道是否要把书单上的书全部读完。
Especially at the beginning of a new course, they are often provided with lists of books to read, and they worry about whether they are expected to read all the books they see on the lists.
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