HSK 7-9
沉甸甸
chéndiàndiàn形
heavy
书包里装满书沉甸甸的。
Shū bāo lǐ zhuāng mǎn shū chén diàn diàn de.
The schoolbag is heavy because it is full of books.
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Other HSK words sharing a character
Also free:
Appears across levels (7-9) in the HSK 3.0 word list.