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I felt at a disadvantage：我觉得处于不利地位

The country is now at war. 这个国家正在打仗. | I felt at a disadvantage. 我觉得处于不利地位. | I think Mr Harris is at lunch. 我想哈里斯先生正在吃午饭.

at a discount：低于正常价格

at a loss 不知所措 | at a discount 低于正常价格 | at ease 放松,轻松

The waterfall may be heard at a distance of two miles：两英里外就能听到瀑布声

(2)The shops were at a distance from where they liv... | (3)The waterfall may be heard at a distance of two miles. 两英里外就能听到瀑布声. | (4)You may enjoy the paintings at a distance of 3 metres. 你...

You may enjoy the paintings at a distance of 3 metres：你可以站在3米的距离以外去欣赏这些画

(3)The waterfall may be heard at a distance of two miles. 两英里外就能听到瀑... | (4)You may enjoy the paintings at a distance of 3 metres. 你可以站在3米的距离以外去欣赏这些画. | at a high price 以高价

at a distance：有相当距离

at a crisis 在紧急关头 | at a distance 有相当距离 | at a glance 看一眼,马上

at a distance：在稍远处

at table 进餐时 | at a distance 在稍远处 | at all 全然;完全不;究竟

keep at a distance：别靠近

at a distance隔远一些,留有空间,不挨近: | Keep at a distance! 别靠近! | The oil painting looks better at a distance. 这幅油画隔远一些看好多了.

at a glance：看一眼,马上

at a crisis 在紧急关头 | at a glance 看一眼,马上 | at a loss 不知所措地

at a guess：凭猜测

54.at a disadvantage 处于不利地位 | 55.at a guess 凭猜测 | 56.at a loss 困惑不解,茫然不知所措

at a guess：推测

at a good pace 相当快地 | at a guess 推测 | at a gulp 一大口

of a composite function：复合函数之导数

Derivative :导数 | of a composite function :复合函数之导数 | of a constant function :常数函数之导数

enriched lake：富营养湖

LRPA Long-Range Patrol Aircraft 远程巡逻飞机 | enriched lake 富营养湖 | bang it about 决胜负 诉诸武力