HSK 5
守
shǒu动
to guard; to defend; to keep watch; to abide by the law
我今晚留在医院守着爷爷。
Wǒ jīn wǎn liú zài yī yuàn shǒu zhe yé ye.
I am staying at the hospital to watch over Grandpa tonight.
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New in the HSK 3.0 word list at level 5.