Safeguard (pp. & pt. safeguarded)
n.保護，保衛；防護措施；安全設施
vt.保護，保衛；防護

They are taking precautionary measures to safeguard their forces from the effects of chemical weapons.
他們正采取預防措施保護其軍隊免受化學武器的傷害。
Many people took second jobs as a safeguard against unemployment...
許多人為防失業都干兩份工作。
A system like ours lacks adequate safeguards for civil liberties.
我們這樣的制度缺乏有效保護公民自由的條款。

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Symmetry
n.對稱；對稱美；整齊，勻稱

I loved the house because it had perfect symmetry...
我喜歡這所房子，因為它非常對稱。
The superpowers pledged to maintain symmetry in their arms shipments.
超級大國承諾在武器運輸方面要保持數量均衡。
He said that Britain would not rejoin the ERM 'until there is much greater symmetry between our economy and other European economies.'
他說在英國經濟與其他歐洲國家的經濟實現更大的趨同性之前，英國不會重新加入歐洲匯率機制。

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Infectious
adj.傳染的；有傳染性的；易傳染的；有感染力的

These viruses affect children and are highly infectious.
這些病毒會侵襲兒童，而且具有很強的傳染性。
She radiates an infectious enthusiasm for everything she does...
她做任何事情都充滿一種極富感染力的熱情。

劇情百科

好吧，Janine的出現不僅讓John很驚訝！也讓我驚訝了。但更讓我驚訝的是，Janine居然成了Sherlock的女朋友，難道說，伴郎和伴娘真得有一腿？咳咳....我想多了。Sherlock是不會做無謂的事情的。那么他為什么要結識并與Janine交往呢？

考考你 Q&A
Q: Please use the word or phrase you just learnt to complete the sentence beblow.

1.Forster established the essentiality of minerals as _____ food factors required for maintaining life.
福斯特證實了礦物質作為輔助食物因子在維持生命方面的重要性。
2.Good traders seem to produce a lot of hormones, but only _____ _____ periods of time.
好的交易員體內似乎是會分泌較多的激素，但情況只限于在短時間內。

A:本期答案見下期
上期答案：

1.My conception of a garden was based on gardens I had visited in England...
我對花園的概念是基于我在英格蘭觀賞過的花園。
2.In a sense he invited germany's call for political integration by publicly pushing for joint eurobonds.
從某種意義上來說正是他公開地推動歐洲聯合債權才讓德國提出政治統一的。