HSK 7-9
码
mǎ动
(archaic) agate; (bound form) standard weight used with a balance scale; number; (computing) code
搬运工把木箱整齐地码在墙边。
Bānyùngōng bǎ mùxiāng zhěngqí de mǎ zài qiángbiān.
The porter stacked the wooden crates neatly by the wall.
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Appears across levels (7-9) in the HSK 3.0 word list.