必须对这些鸟称重，辨识雌雄并挂上标牌。The birds must be weighed, sexed and tagged.你怎样辨别一条鱼的雌雄？How can you tell what sex a fish is?鸟的雌雄通常可就其颜色予以区分.Coloring differentiates the sexes in many birds....
我们可以一路上乘摩托艇去.We can go all the way by motorboat.国民托管组织已颁布禁令，禁止在多塞特、德文与康沃尔地区使用水上摩托艇。The National Trust has placed an interdict on jet-skis in Dorset, Devon and Cornwall.一艘摩托艇缓缓驶出薄雾，蹭进一棵树的枝叶中。A motorboat nosed out of the m...
The technology of vacuum aluminizing casting polypropylene ( CPP ) film and its applications to packaging were discussed.简要论述了真空镀铝流延聚丙烯 ( CPP ) 膜的生产工艺及其在包装上的应用.CONCLUSION : CPP is a new safe medical material with good co...
Chitin synthase is the important enzyme that converts UDP - GlcNAc to chitin.摘要几丁质合成酶是生物合成几丁质的关键物质.Chitin, chitosan are recycling natural polymers with abundant and excellent properties.甲壳素 、 壳聚糖是可再生的天然高分子化合物,来源丰富、性质优良.C...
Many children who can't or don't conform are often bullied.很多不能或不按规矩行事的小孩常常被人欺负。Mr Adams was repeatedly bullied and picked on by manageress Elizabeth Archer.女经理伊丽莎白·阿彻多次胁迫和刁难亚当斯先生。Tell children to tell a grown-...
Cutting - axle fracture are primary causes of wagon capsizing.切轴断裂是造成铁路车辆重大倾覆事故的主要原因.The serious nonlinear rolling, acted by outside forces or other factors, will lead ships to capsizing.严重的非线性横摇在外力或其它因素激励下极易导致船舶的倾覆.The ...