单词：pyethrum
除虫菊
单词：pyethrum 相关文章
One kind has in its eye a little green knob just like the head of a pin; these are called pin-eyed. The other kind has a fringe of little yellow dust-spikes instead; such flowers are called thrum-eyed. 其中一种的眼中，有一个小小的绿球，
发表于:2019-01-17 / 阅读(367) / 评论(0)
英国学生科学读本
英国学生科学读本