他們其中一人是間諜。

One of them is a spy.

Source: Tatoeba

Sentence Composition

1 他們 tāmen they; them
2 其中 qízhōng
  1. among
  2. in
  3. included among these
3 一人 yīrén
  1. (historical) emperor
  2. a person; one person; someone
  3. by one person; alone
  4. emperor
  5. one person each
=4 是 shì
  1. to be (followed by substantives only)
  2. correct; right; true
  3. (respectful acknowledgement of a command) very well
  4. (adverb for emphatic assertion)
=4 是 shì variant of 是 shì
5 間諜 jiàndié spy