at
within
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→zai4nei4 • zàinèi
include
including, includes, within
郵費 在內
postage included
連 我 在內， 小組 有 七 個 人。
Including me, there are seven people in the group.
房租 每 月 四百 元， 水電費 包括 在內。
The rent is 400 yuan a month, including water and electricity fees.