perky
同义词: buoyant chirpy

lime 1 / laɪm; laɪm/ n [U]
(also `quicklime) whitesubstance (calcium oxide) obtained by heating limestone,used in making cement and mortar and as a fertilizer 石灰.
lime 2 / laɪm; laɪm/
(also `lime-tree, linden) n tree with smooth heart-shaped leaves and fragrant yellow flowers 椴树（乔木, 叶光滑呈心形, 花黄, 有香味）.
lime 3 / laɪm; laɪm/
n [C] (tree bearing) round fruit like a lemon but smaller and more acid 酸橙树, 酸橙（比柠檬小但更酸）.
[U] (also lime green) yellowish-green colour of this fruit 酸橙绿色; 淡黄绿色.
# `lime-juice n [U] juice of limes used for flavouring or as a drink 酸橙汁（用作调味或饮料）.

dereliction
渎职

consistency / kənˈsɪstənsɪ; kənˋsɪstənsɪ/
n (also consistence) [U] (approv 褒) quality of being consistent(1) 一贯性; 一致性:
His views lack consistency: one day he's a conservative, the next he's a liberal. 他的观点缺乏一贯性: 时而保守, 时而开明.
[C, U] degree of thickness, firmness or solidity, esp of thick liquids, or of sth made by mixing with a liquid 强度; 硬度; （尤指）浓度:
Mix flour and liquid to the right consistency. 把面粉和液体混合到适当的浓度. * mixtures of various consistencies 各种不同浓度的混合物
It should have the consistency of thick soup. 这应该有浓汤那样的浓度.

miserable / ˈmɪzrəbl; ˋmɪzrəbl/
adj very unhappy or uncomfortable; wretched 悲惨的; 难受的; 不幸的; 可怜的
* Refugees everywhere lead miserable lives. 各地难民过着凄惨的生活.
causing unhappiness or discomfort; unpleasant 造成不幸或痛苦的; 令人不快的
miserable (eg cold and wet) weather 令人难受的天气
poor in quality or quantity; too small or meagre 低劣的; 贫乏的; 小得或少得可怜的:
What a miserable meal that was! 那顿饭真差劲!
* How can I keep a family on such a miserable wage? 我怎麽能靠这麽可怜的工资养家?


arrhythmia 心律失常
chilly 寒冷的

数学的相关表达
mathematics数学
theorem定理
calculation计算
operation运算
addition加法
subtraction减法
multiplication乘法
division除法
plus sign加号
minus sign减号

Aquatic Sports水上运动
water polo水球
water skiing水橇
rowing划船
canoe划艇
boat race赛艇
yacht游艇
kayak 皮船
sailing帆船运动
diving 潜水
浮潜Skin Diving
闭气潜水Free Diving
护目镜 goggle
surving 冲浪
swimming 游泳
medley relay混合泳
breaststroke蛙式
backstroke仰式
freestyle自由式
butterfly蝶泳