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n.
(麻醉的,催眠的) addictive drug, such as opium, that reduces pain, alters mood and behavior; inducing sleep


Spelling Word: narcotic
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a.
(可以通航的) wide and deep enough to allow ships to pass through; able to be steered


Spelling Word: navigable
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n.
(贵族,高贵的身份,高贵) quality or state of being noble; superiority of mind or of character; commanding excellence; eminence


Spelling Word: nobility
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n.
(符号,记号) technical system of symbols used to represent special things; comment or instruction


Spelling Word: notation
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a. Syn. disreputable; infamous
(臭名昭著的,声名狼藉的) disreputable; known widely and usually unfavorably; infamous


Spelling Word: notorious
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a. Syn. insensible; indifferent
(麻木的,使失去感觉) without the power of sensation and motion or feeling; insensible; unresponsive; indifferent


Spelling Word: numb
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a. Syn. many; various
(众多的,很多的) many; various; amounting to a large indefinite number


Spelling Word: numerous
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n.
(天文台,气象台) place or building for making observations on the heavenly bodies; building fitted with instruments for making systematic observations of space


Spelling Word: observatory
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v. Syn. besiege
(纠缠,困扰) preoccupy the mind of excessively; besiege; compass about; dominate the thoughts of someone


Spelling Word: obsess
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n.
(冒犯) act of causing anger, resentment, displeasure, or affront; violation or infraction of moral or social code


Spelling Word: offence