每天背单词 第269期

bona

英 ['bəunə] 美 ['bonə]

n. （Bona）（意、美、巴、匈、法、西、加）博纳（人名）

例句：

Is it a bona fide, reputable organization?
这是不是个合法的、值得信赖的机构？

We are happy to donate to bona fide charitable causes.
我们很乐意向真正的慈善事业捐赠。

Mr. Perks questioned them at length to establish their bona fides.
珀克斯先生详细地询问他们以确定其诚意。

descent

英 [dɪˈsent] 美 [dɪˈsent]

n. 下降；血统；袭击

vt. 除去…的气味；使…失去香味

例句：

All the contributors were of African descent.
所有捐助者都是非洲血统。

Britain has always been the principal source—ninety percent of Australians are of British descent, and Britain has provided one million migrants since the Second World War.
英国一直是澳大利亚移民的主要来源国——90%的澳大利亚人是英国后裔，自二战以来，英国已经提供了100万移民。

There is a gradual descent to the sea.
有一片斜坡缓缓伸延到海边。

ponder

英 [ˈpɒndə(r)] 美 [ˈpɑːndər]

vt. 仔细考虑；衡量

vi. 考虑；沉思

n. (Ponder)人名；(英)庞德

例句：

Cube Sat researchers suggest that now's the time to ponder unexpected and unintended possible consequences of more people than ever having access to their own small slice of space.
Cube Sat 公司的研究人员表示，现在是时候考虑一下越来越多的人进入自己的狭小空间而可能产生的意想不到的后果了。

They were left to ponder on the implications of the announcement.
他们被留下来琢磨这项宣告的含义。

I'll leave you to ponder that one.
关于这点，我就留给你去认真思考吧。

exclusively

英 [ɪkˈskluːsɪvli] 美 [ɪkˈskluːsɪvli]

adv. 唯一地，专有地，排外地；作为唯一的（消息）来源

例句：

Today he was able to focus his message exclusively on the economy.
今天他能够将重点聚焦在经济方面。

He paints from a palette consisting almost exclusively of grey and mud brown.
他画画几乎只用包含灰色和土褐色的色调。

Randolph's work was exclusively concerned with the effects of pollution on health.
伦道夫的作品全部讲的是污染对健康的影响。

suppression

英 [səˈpreʃn] 美 [səˈpreʃn]

n. 抑制；镇压；[植] 压抑

例句：

A mother's suppression of her own feelings can cause problems.
一位母亲对她自己情感的压抑可能会导致问题。

Eye problems can indicate an unhealthy lifestyle with subsequent suppression of the immune system.
眼睛问题表明一种不健康的生活方式以及随后免疫系统所受的抑制。

This genetically determined resting stage, characterized by the cessation of development and protein synthesis and suppression of the metabolic rate, is called diapause.
这种由遗传决定的休眠期被称为滞育，其特征是发育和蛋白质合成的停止以及代谢率的抑制。

回顾

1. bona
2. descent
3. ponder
4. exclusively
5. suppression