Warning: file_put_contents(/www/wwwroot/zidian/biehu.cn/cache/5c1d67b6d0f3e5857b515b1e1158989b.txt): failed to open stream: No space left on device in /www/wwwroot/zidian/biehu.cn/index.php on line 58 pollen tube英英字典_pollen tube剑桥英语解释_pollen tube柯林斯英文解释_甲百汇小鸡词典
1. N a hollow tubular outgrowth that develops from a pollen grain after pollination, grows down the style to the ovule, and conveys male gametes to the egg cell 花粉管