automatic

automatic
adjective

(of a device or process) working by itself with little or no direct human control
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.
口径测定完全是自动的。
■(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。
■(of a motor vehicle or its transmission) using gears that change by themselves according to speed and acceleration
（汽车或变速器）自动（变速）的
a four-speed automatic gearbox.
四速自动变速器。
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.
“很高兴见到你，”他自然而彬彬有礼地说道。
■occurring as a matter of course and without debate
必然的
he is the automatic choice for the senior team.
他是高级组的必然人选。
■(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。

noun

an automatic machine or device, in particular
自动装置，尤指
■a gun that continues firing until the ammunition is exhausted or the pressure on the trigger is released
自动手枪
■a vehicle with automatic transmission
有自动变速装置的汽车

派生
automatically
adverb
automaticity
noun
语源

mid 18th cent.: from Greek automatos 'acting of itself' (see automaton) + -ic

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