HSK 4
之间
zhījiān名
(after a noun) between; among; amid; (used after certain bisyllabic words to form expressions indicating a short period of time, e.g. 弹指之间)
这两个城市之间有火车。
Zhè liǎng gè chéng shì zhī jiān yǒu huǒ chē.
There is a train service between these two cities.
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New in the HSK 3.0 word list at level 4.