Traditional: 自動
自动 (zì dòng) means “automatic; voluntarily”. It is an HSK 5 Chinese word (traditional 自動) in the HSK 3.0 vocabulary.
这扇门是自动门,靠近就会开。
Zhè shàn mén shì zìdòng mén, kàojìn jiù huì kāi.
This is an automatic door, it opens when you approach.
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