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observant
adj.
观察力敏锐的
(6L&T)
occupation
n.
占领
(8a)
opera
n.
歌剧
(3a)
oppose
v.
反对;反抗
(8b)
optimistic
adj.
乐观的
(4CS)
organ
n.
[生理] 器官
(4L&T)
organization
n.
团体,组织,机构,社团
(3b)
orient
v.
确定方位
(6L&T)
outermost
adj.
最外面的;最远的
(4CS)
◆
outflank
v.
侧翼包剿;出奇制胜
(3b)
◆
outline
n.
提纲;概要
(5b)
outskirts
n.
边界,(尤指)城市的郊区
(6a)
overcome
v.
战胜,打败,克服,压倒
(8a)
overdose
n.
服药过量
(7L&T)
overflow
v.
溢出
(1L&T)
overtake
v.
追上,赶上;(在感情上)压倒
(1b)
▲
overwhelm
v.
(水)淹没;使…不知所措
(8a)
ovum
n.
卵(子)
(4CS)
oxygen
n.
氧,氧气
(1a)
©Experiencing English (2nd Edition) 2007