HSK 7-9
观测
guāncè动
to observe; to survey; observation (scientific etc)
气象站每天观测风向变化。
Qì xiàng zhàn měi tiān guān cè fēng xiàng biàn huà.
The weather station observes changes in wind direction every day.
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Appears across levels (7-9) in the HSK 3.0 word list.