401, opaque a.不透明的;不传导的
The once clear mountain stream is now polluted and opaque.
曾经是很清澈的山溪, 现在受到污染变得混浊了。
难理解的, 晦涩的
The report was written in long, opaque sentences.
报告中的句子又长又难懂。
402, oppress vt.压迫,压制;压抑
vt. 使烦恼
Many troubles oppressed my father.
种种困难使我父亲意志消沉。
压迫, 压制
She is often oppressed by him. 她经常受他的压迫。
403, optimism n.乐观,乐观主义
Optimism made him alive through the hard days.
乐观主义使他在艰难的岁月里活了下来。
404, optimum n.最适条件,最适度
adj. 最适宜的; 最有利的
Do you know the optimum temperature for the growth of plants? 你知道庄稼生长的最佳温度吗?
405, option n.选择,取舍
You will have to pay them; you have no option.
你必须付给他们钱, 别无选择。
可选择的办法
The government has two options; to reduce spending or to increase taxes. 政府有两种选择的办法:或是减少开支, 或是增加税收。
附件, 配件
The car includes air-conditioning among its options.
这辆汽车的配件中包括空调设备。
买卖选择权, 期权
Jones has taken an option on shares in the company.
琼斯已获得那家公司股票的期权。
406, orient n.东方;亚洲,远东
vt. 使熟悉, 使适应
He oriented himself on coming to a new city.
他初到一个新城市, 就使自己适应新的环境。
使朝向; 使确定位置
The climbers stopped to orient themselves before descending the mountain.
登山者先停下来确定所在的位置, 然后再下山。
n. 东方, 亚洲
The people in the Orient are mainly yellow or brown.
东方国家的人种主要是黄色的或棕色的
407, oriental a.东方的;东方国家的
adj. 东方的, 东方人的, 东方文化的
Do some oriental philosophies lean towards fatalism?
有些东方的哲学倾向于宿命论吗?
408, orientation n.向东;定位;方向
n. 方向, 目标
The winding trail caused the hikers to lose their orientation. 蜿蜒的小径使徒步旅行者迷失了方向。
熟悉情况; 适应
Children need some orientation when they go to school.
小孩子上学时需要适应。
409, originate vi.发源 vt.首创
vi. 起源于, 来自, 产生
His book originated from a short story.
他的书是根据一个短篇小说撰写的。
vt. 创造, 创始, 开创; 发明
He originated a new instrument.他发明了一种新仪器。
410, ornament n.装饰物 vt.装修
n. 装饰; 点缀
The flowers were put on the table for ornament.
花放在桌子上做装饰用。
装饰品, 点缀品
Theres a lot ornaments on the wall.墙上有许多装饰品。
vt. 装饰, 点缀, 美化
They are ornamenting a Christmas tree.
他们在装饰圣诞树。
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