科学家们对全球变暖感到非常担忧。
The scientists showed great concern about the warming of the earth.
所有望远镜都没有注意到它，这令科学家们感到担忧。如果它再大一些，就可能造成一场大灾难。
Scientists are concerned that it was not spotted by any telescopes, and that had it been larger it could have caused a disaster.
长久以来，科学家们和监管机构对有机磷酸酯都很担忧。因为有机磷酸酯会对昆虫和人类的神经活动中一种很重要的酶产生不可逆的阻碍。
Organophosphates have long worried scientists and regulators because they irreversibly block an enzyme critical to nerve function in both insects and humans.
长久以来，科学家们和监管机构对有机磷酸酯都很担忧。因为有机磷酸酯会对昆虫和人类的神经活动中一种很重要的酶产生不可逆的阻碍。
Organophosphateshave long worried scientists and regulators because they irreversibly block anenzyme critical to nerve function in both insects and humans.
天野说，还有一点令人担忧的是，英语在科学家们看来已经变得非常权威，所以许多非英语国家的人会避免使用本国语言发表研究结果。
It's also worrisome that English has become so prestigious for scientists that many non-English speakers avoid publishing research in their own languages, Amano says.
作为一个科学家，同时也是个妈妈，我很理解父母们会有担忧。
As a scientist and a mother, I understand the confusion of parents phase.
医药科学家们表达了他们对烟民们和生活在被烟草污染的空气中的人们的健康受吸烟影 响的担忧。
Medicai scientists have expressed their concern about the effect of smoking on the health not only of those who are smoking but also of those who live in the air polluted by tobacco smoke.
科学家们发现有些狒狒（像Marie）的极好竞争；而其他的人们（像Alice）则比较温和、对于比较不那么担忧。
Scientists have found that some baboons (like Marie) are extremely competitive, others (like Alice) more mellow, less worried about measuring up.
科学家们发现有些狒狒（像Marie）的极好竞争；而其他的人们（像Alice）则比较温和、对于比较不那么担忧。
Scientists have found that some baboons (like Marie) are extremely competitive, others (like Alice) more mellow, less worried about measuring up.
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