97 篇文章
Since parasites like these stop any one group of animal getting the upper hand.
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Since parasites like these stop any one group of animal getting the upper hand. 这种寄生虫能阻止某种生物种群的优势

Finding the fungus isn't a problem for the grubs since their caring parents actually show them the way.
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Finding the fungus isn't a problem for the grubs since their caring parents actually show them the way. 幼虫寻找菌类当然比较困难 不过在父母的领引下不费吹灰之力

and since this discovery more than 120 miles of passageways have been mapped.
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and since this discovery more than 120 miles of passageways have been mapped. 自从那次发现之后 迄今已测绘了120多英里的地道

Since the last Ice Age they've become cut off from the outside world.
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Since the last Ice Age they've become cut off from the outside world. 自从上一个冰川期以来 它们便已和外界隔绝

it's six months since she last fed
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it's six months since she last fed 它已经6个月没有吃东西了

It's six days since the bears emerged
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It's six days since the bears emerged 现在是北极熊现身后的第6天

the only food the cubs have known since they were born deaf and blind beneath the snow some two months ago.
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the only food the cubs have known since they were born deaf and blind beneath the snow some two months ago. 自从熊崽们两个多月前又聋又瞎地 在雪下出生以来 母乳就是它们唯一的食物