Study the anti-fecundity effect of artesunate against the schistosoma mansoni by observation and analysis of the parasite egg laying.

通过观察青蒿琥酯对曼氏血吸虫雌虫产卵的影响，分析药物的抗生殖作用。

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This is egg laying season, if you're a bird.

如果你是一只鸟，现在就是产卵季节。

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The flies were given two different fruits as egg laying sites.

产卵点选择后果蝇被供给2种不同的水果。

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According to the firm, bird numbers would be comparable with the site's use as an egg laying unit.

BBC: Bleasby Moor Against Development group

Campaigners have vowed to fight plans to convert an egg laying unit in Lincolnshire into a site for breeding chickens for slaughter.

BBC: Bleasby Moor Against Development group

It follows last week's "puzzling" behaviour by the bird, who showed all the tell-tale signs of egg laying before completely changing her behaviour.

BBC: 'Oldest' breeding osprey lays 62nd egg at Loch of the Lowes