常見(jiàn)例句The sap flowed out when he broke the stem of the flower.他把花莖折斷,汁液就流了出來(lái)。The gardener could graft as many as twenty cuttings an hour on to briar stems.這位園丁每小時(shí)可以嫁接多達(dá)20根枝條到石南莖上去。 返回 stemming