他说话明显结巴。He spoke with a pronounced stutter.他脸色发白，说话开始结巴。He turned white and began to stammer.他老结巴，这叫她难以忍受。He tended to stutter, which tried her patience....
然后，这些植物就被授粉，从而成熟结籽。These plants are then pollinated and allowed to mature and produce seed.这些花通过昆虫授粉.The flowers are pollinated by insects.某些物种只能异花授粉。Certain varieties cannot be fertilised with their own pollen....