The purpose of this study is to provide information that may help to evaluate pollution effects on early life stages of O. obscures.

研究目的是为评估环境中重金属对河川沙塘鳢早期发育各个阶段的影响提供理论依据。

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Food availability in the early stages of life may be related to later reproductive success in humans, according to research on birth and harvest records from 18th century Finland.

根据一项对芬兰自18世纪以来人口出生和农作物收获记录进行的研究，在人生开始阶段的食品摄入状况可能会影响到今后的生育成功率

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We know that health inequalities at the early stages translate into inequalities in terms of achievement later in life.

我们知道，幼年阶段的健康失衡会导致后来的成就失衡。

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The Serb was particularly subdued early on before coming to life in the latter stages of the first set.

BBC: Australian Open: Federer survives scare from Simon

The condition has no symptoms in the early stages but requires patients to use eye drops for life.

BBC: Photo of an eye examination

Spaniard Nadal looked tentative in the early stages of the night-session match at the Rod Laver Arena and only came to life when 30-year-old opponent Luczak served for the opening set at 5-3.

CNN: Nadal and Murray ease into second round