Spices actually aren't very effective as preservatives.
香料实际上不是很有效的防腐剂。
It was a very effective way for them to keep track of their spending.
对他们来说,这是一种记录支出的非常有效的方法。
Both musically and lyrically it is very effective.
这首歌的音乐和歌词都给人留下非常深刻的印象。
And it sank,too. The Confederacy also developed very effective underwater explosive devices for use in the harbors.
VOA: special.2009.09.10
They found that certain cells, in particular, epithelial cells from monkey kidneys, were very effective at propagating the virus.
他们发现有些细胞,尤其是在猴肾脏的上皮细胞中,这种病毒能够有效地增殖
And so they're already very safe, very effective vaccines available for many infectious diseases.
所以这些疫苗非常安全有效,常备用来对付各种传染病
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