zhēn kōng gǒng
vacuum pump
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foster child,
foster conversational exchanges,
foster daughter,
foster father,
foster home,
foster mother,
foster parent,
foster son,
fosterage,
fosterer,
相似单词
真空包装的,
真空泵,
真空成形,
真空的,
真空风扇,
真空汞,
真空管,
真空管伏特计,
真空唧筒,
真空计,