擅

usurp

without authority

擅[shàn]

-（超越范围，独断独行）arrogatetooneself;claimarbitrarily:
monopolize[usurp]power擅权
-（长;善于）begoodat;beexpertin:
lackfacilityinpoliteortactfulspeech;不擅辞令
benotparticularlygoodatcasualconversation不擅酬应
-（擅自）dosth.onone'sownauthority;arbitrarily:
makeadecisionwithoutauthorization;makeanunilateral[arbitrary]decision擅作主张

他因擅离职守而被降级（为下士）。
He was busted (to corporal) for being absent without leave.

无通行证者不得擅入军事基地。
You cannot enter a military base without a permit.

她未请示上级擅自把所有这些请柬都发了出去。
She issued all these invitations without any reference to her superiors.

他们未经许可擅入该地。
They entered the area without permission.

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