自动 zìdònɡ adjective ① (主动) voluntary ▸ 自动参加 participate voluntarily ▸ 自动交待 confess of one’s own accord ② (不用人力) self-generated ▸ 自动燃烧 spontaneous combustion ▸ 水自动流到田里。 The water flowed into the fields naturally. ③ (依靠自身系统) automatic ▸ 自动充电 be self-charging ▸ 自动音量控制 automatic volume control |