昆虫和蠕虫都是无脊椎动物。Insects and worms are all invertebrates.在蚯蚓和许多其它无脊椎动物中, 这些排泄结构称为肾管.In the earthworm and many other invertebrates, these excretory structures are called nephridia.公园里的本地特有的脊椎动物和无脊椎动物也很多.Endemism of vertebrate...
At best they were effective as antidepressants for no more than four months.它们充其量也只能起到4个月的抗抑郁剂的效果。Modern pharmacology offers an abundance of tranquilizers, antidepressants and anti - anxiety drugs.现代药理学提供了许许多多的镇静剂 、 抗抑郁剂...
先画个轮廓,再画细部.Draw an outline before you fill in the details.道路及其它地物细部还可以用颜色予以突出.Roads and other cultural details may be emphasized in colour.各个细部似乎都豁然一亮,悠悠荡荡地变成了现实.Each detail glowed, became quiveringly real....
类固醇用于消除可能导致气道肌肉收缩的炎症。Steroids are used to reduce the inflammation, which makes the muscles of the airways liable to constriction.这种肌肉舒张和收缩的有节律波动称为蠕动.These rhythmic waves of muscular relaxation and contraction are called ...