U S A 美
s a wonderful life 风云人物 ; 美好生活 ; 糊口多美妙
S A P 服务访问点 ; 树液 ; 通过使用服务通告协议 ; 的服务广播协议
LOVE I S A WOMAN 爱犹如一个女人
S&A 赛吉 ; 赛吉琥珀
Arrhenius S A 尼乌斯 ; 阿仑尼乌斯
s a short-cut 条近路
Plias S A 普丽爱斯有限公司
Although the pesticide TDX has been widely used by fruit growers since the early 1960's, a regulation in force since 1960 has prohibited sale of fruit on which any TDX residue can be detected.
虽然 TDX 这款农药自20世纪60年代早期就被果农广泛使用,但自1960年起,一项生效的法规禁止销售任何可以检测到 TDX 残留的水果。
Since the mid-1970's, a different strategy has emerged.
自20世纪70年代中期以来,出现了一种不同的策略。
Since we've moved to this new shop, the expenses have increased greatly, because it' s a much bigger shop.
自从我们搬到这家新店以后,费用大大增加了,因为它是个比之前大得多的店。
But when she's a-spittin' like a wildcat,a man's got no call to live with her."
VOA: special.2009.11.14
And that was possible in smallpox because of a few characteristics of the disease: one is that it's a--it's purely a human disease, humans are the only organisms that are affected by it.
天花能够被根治的原因在于,这种疾病具有以下几个特点,一是,它是一种只有人类才得的疾病,人类是唯一受天花感染的生物
so it's a 250-person class, but we have a group of 50 that we go around with quite a bit.
这是一门250人的课,但是我们组成50人一组一起学习。
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