Homogamy occurs in the closed cleistogamous flowers that appear late in the season in certain plants.导致发生自花授粉的可能性很大.Cleistogamous plants produce flowers which either open only partly or not at all.闭花受精植物产生的花只是部分地开放或完全不开放...
The net is weighted to keep it below the surface of the water.这个网加了坠因而可没入水面以下。Circumstances are weighted in his favour.情况对他尤其有利.She was weighted down with her heavy bags.她因背着她沉重的袋子而累弯了腰.Cosh: a weighted weapon similar to...