基本解释胚珠管英汉例句双语例句One of them has started growing a tube that transfers the sperm to the ovule of a receptive ovary.其中一株开始生长出管状器官，用来传送精粉到授粉端花房的胚珠。 黄色的颗粒是其他植物的花粉。ovule tube更多例句