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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Echidnas are part of a group of egg-laying mammals called monotremes.

VOA: special.2009.07.07

He's asking us to imagine God, or perhaps this is God's creative spirit, as some sort of feminine being laying the universal egg and brooding over it until it bursts forth with new life. This is a risk.

他想让我们把上帝，或者说上帝的创造精神，想象成一个产下宇宙之卵并孵伏其上,直到新生命破壳而出的女性形象，这很冒险。

耶鲁公开课 - 弥尔顿课程节选

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