1
- (of a device or process) working by itself with little or no direct human control（装置, 流程）自动的：
an automatic kettle that switches itself off when it boils
水烧开时会自动切断电源的自动水壶
calibration is fully automatic.
校准完全是自动的。
1.1
- (of a firearm) self-loading and able to fire continuously until the ammunition is exhausted or the pressure on the trigger is released（武器）自动的：
automatic weapons.
自动武器。
1.2
- (of a motor vehicle or its transmission) using gears that change by themselves according to speed and acceleration（汽车, 变速器）自动（变速）的：
a four-speed automatic gearbox.
四速自动变速器。
2
- done or occurring spontaneously, without conscious thought or attention自然而然的; 不经思索的：
automatic physical functions such as breathing
呼吸之类无意识的身体机能
'Nice to meet you, ' he said, with automatic politeness.
“很高兴认识你,"他自然而彬彬有礼地说道。
2.1
- occurring as a matter of course and without debate理所当然的, 无可争议的：
he is the automatic choice for the senior team.
他是高级组的必然人选。
2.2
- (especially of a legal sanction) given or imposed as a necessary and inevitable result of a fixed rule or particular set of circumstances（尤指法律裁决）自动（执行）的：
he received an automatic one-match suspension.
他被自动禁赛一场。
1
- an automatic machine or device, in particular自动装置, 尤指：
1.1
- a gun that continues firing until the ammunition is exhausted or the pressure on the trigger is released自动手枪。
1.2
- a vehicle with automatic transmission自动变速汽车。
派生词
automatically
adverbautomaticity
noun词源