n. 航行（學），航海（術），海上交通；
[例句] Pack ice around Iceland was becoming a threat to navigation.
adv. 必要地，必需地，必定地，必然地；
[例句] Anger is not necessarily the most useful or acceptable reaction to such events...
[例句] Speed and safety are not necessarily incompatible...
n. 中心，核心，（原子）核，起點，開始，[微]細胞核；
[例句] Neutrons and protons are bound together in the nucleus of an atom.
[例句] The Civic Movement could be the nucleus of a centrist party of the future.
vt. 使正常化，使標準化；
[例句] Meditation tends to lower or normalize blood pressure...
[例句] There may be some deep-seated emotional reason which has to be dealt with before your eating habits normalize.
n. 營養，滋養，營養品，營養學，食物；
[例句] There are alternative sources of nutrition to animal meat...
[例句] As in all experimental sciences, we still do not know everything about nutrition.
vt. 滋養，施肥于，撫養，教養，懷抱（希望、怨恨），使健壯；
[例句] The food she eats nourishes both her and the baby.
[例句] ...microbes in the soil which nourish the plant.
adj. 顯而易見的，明顯的，引人注目的，令人矚目的，顯著的，重要的，可以察覺的；
[例句] It is noticeable that women do not have the rivalry that men have...
[例句] The most noticeable effect of these changes is in the way people are now working together.
n. 蕁麻，〈比喻〉使人煩惱的事；v. 拿蕁麻打，拿蕁麻刺，激怒，惹
[例句] The nettles stung their legs.
[例句] ...numerous clumps of stinging nettles dotted across the meadow.
adj. 頑皮的，不聽話的，淘氣的，下流的；
[例句] Girls, you're being very naughty...
[例句] You naughty boy, you gave me such a fright.
n. 注意( notice的名詞復數 )，布告，警告，預告；v. 介紹( notice的第三人稱單數 )，關注，關照，說到；
[例句] People should not hesitate to contact the police if they've noticed anyone acting suspiciously...
[例句] I noticed that most academics were writing papers during the summer...
adv. 否定地，消極地，取消地，負地；
[例句] The news from overseas is overwhelmingly negative...
[例句] All this had an extremely negative effect on the criminal justice system.
n. 編號方式；v. 數，算( number的現在分詞 )，給…編號，總共；
[例句] No, I don't know the room number...
[例句] Stan Laurel was born at number 3, Argyll Street...
n. 西北，西北方向，西北部；adj. 在西北的，西北部的，向西北的，（風、光線）來自西北方的；adv. 自西北地；
[例句] ...Ushant, five miles out to the north-west.
[例句] Labour took its pre-election campaign to the North-West.
vt. 通知，布告；
[例句] The skipper notified the coastguard of the tragedy...
[例句] Earlier this year they were notified that their homes were to be cleared away...
adj. 在附近的，位于附近的；adv. 附近地，不遠地；
[例句] He might easily have been seen by someone who lived nearby...
[例句] He spoke softly to a couple standing nearby...
n. 居住區，周邊地區，大約，在…附近；
[例句] It seemed like a good neighbourhood to raise my children.
[例句] He was born and grew up in the Flatbush neighbourhood of Brooklyn...
adj. 臭名昭著的，臭名遠揚的，聲名狼藉的，惡名昭著；
[例句] ...an area notorious for drugs, crime and violence...
[例句] She told us the story of one of Britain's most notorious country house murders.
vt. 使中立化，使無效，宣布中立，中
[例句] The US is trying to neutralize the resolution in the UN Security Council...
[例句] The intruder smashed a window to get in and then neutralized the alarm system.
adj. 發瘋的，傻的，熱愛的，迷戀的；n. 螺母（ nut的名詞復數 ），堅果，對…著迷的人，瘋子；
[例句] Nuts and seeds are good sources of vitamin E.
[例句] If you want to repair the wheels you just undo the four nuts.
n. 國籍，國家，民族性，部落；
[例句] Asked his nationality, he said British...
[例句] The crew are of different nationalities and have no common language.