to be
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→jie1shi4 • jiēshì
are all
all are, all, is all, all is
他们 所 做 的 努力 皆是 值得 的。
Their efforts are all worthwhile.
教室 里 的 学生 皆是 认真 学习。
The students in the classroom are all studying diligently.
这本 书 的 内容 皆是 事实， 没有 虚构。
The contents of this book are all factual, with no fiction.