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 dug-outs were secure from everything but a direct hit.除非是直接被击中，否则这个地下掩体是非常安全的。He took a shovel, dug a hole, and buried his once-prized possessions.他拿起一把铁锨，挖了个坑，将自己曾经珍爱的物品埋了起来。Two men were standing by the freshly dug ...
The meeting with Gregory Pincus nirvana for my grandmother.我祖母与格利戈里·平卡斯见面以后,就好像重获新生一样.Entering the realm of Nirvana is only possible for those who have become pure.心无杂念，方可入灭。Many businessmen think that a world where rela...
The difficulties have created a spirit of togetherness.危难造成了一种患难与共的精神.They hid the troubles plaguing their marriage behind a facade of family togetherness.他们将困扰婚姻的问题掩藏在家庭和睦的外表之下。Family togetherness also an important aspe...