Warning: file_put_contents(): Only 0 of 6103 bytes written, possibly out of free disk space in /home/www/wwwroot/zidian/totle.com.cn/index.php on line 55 pollen tube英英字典_pollen tube剑桥英语解释_pollen tube柯林斯英文解释_乐豆毛深蓝词典
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