【英语时差8,16】蜗牛（中）
时间：2019-03-06 作者：英语课 分类：英语时差8，16
Now here’s the strange part. About once a week, as garden snails 2 share caresses 3, pressure builds up in the area surrounding a sac near the genital region housing a calcium 4 dart 5. Just for the moment of sexual penetration 6, the impregnating snail 1 stabs its partner near the genitals with what scientists have dubbed 7 the snail love dart. But what might sound like a nasty sadomasochistic ritual does have a practical purpose. According to one study, the darts 8 are tipped with a chemical preventing the snail on the receiving end from digesting most of its mate’s sperm 9. As in many species, the garden snail’s female reproductive tract 10 is hostile to sperm, allowing only the toughest and most resilient to fertilize 11 the egg. To increase its chances of passing on its genes 12, the impregnating snail fires a dart to give its sperm a fighting chance.
- Snail is a small plant-eating creature with a soft body.蜗牛是一种软体草食动物。
- Time moved at a snail's pace before the holidays.放假前的时间过得很慢。
- I think I'll try the snails for lunch—I'm feeling adventurous today. 我想我午餐要尝一下蜗牛——我今天很想冒险。 来自《简明英汉词典》
- Most snails have shells on their backs. 大多数蜗牛背上有壳。 来自《简明英汉词典》
- A breeze caresses the cheeks. 微风拂面。
- Hetty was not sufficiently familiar with caresses or outward demonstrations of fondness. 海蒂不习惯于拥抱之类过于外露地表现自己的感情。
- We need calcium to make bones.我们需要钙来壮骨。
- Calcium is found most abundantly in milk.奶含钙最丰富。
- The child made a sudden dart across the road.那小孩突然冲过马路。
- Markov died after being struck by a poison dart.马尔科夫身中毒镖而亡。
- He is a man of penetration.他是一个富有洞察力的人。
- Our aim is to achieve greater market penetration.我们的目标是进一步打入市场。
- Mathematics was once dubbed the handmaiden of the sciences. 数学曾一度被视为各门科学的基础。
- Is the movie dubbed or does it have subtitles? 这部电影是配音的还是打字幕的？ 来自《简明英汉词典》
- His darts trophy takes pride of place on the mantelpiece. 他将掷镖奖杯放在壁炉顶上最显著的地方。 来自《简明英汉词典》
- I never saw so many darts in a bodice! 我从没见过紧身胸衣上纳了这么多的缝褶！ 来自《简明英汉词典》
- Only one sperm fertilises an egg.只有一个精子使卵子受精。
- In human reproduction,one female egg is usually fertilized by one sperm.在人体生殖过程中，一个精子使一个卵子受精。
- He owns a large tract of forest.他拥有一大片森林。
- He wrote a tract on this subject.他曾对此写了一篇短文。
- Fertilizer is a substance put on land to fertilize it.肥料是施在地里使之肥沃的物质。
- Reading will fertilize his vocabulary.阅读会丰富他的词汇。