是否
word B1- whether (or not)
- if
- is or isn't
Its characters
From the library
问题不在于工具本身，而在于我们是否还有耐心把一篇长文章读完。
在我看来，这两种选择并无高下之分，关键在于是否尊重老人自己的意愿。
父亲接着说：“你可以在兼职期间，看看自己是否真的适合这个行业。
Learn 是否 in real texts
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