来自楝属 、 印楝局的植物在杀虫活性、有活性种类数量方面高于其它属,米仔兰属、鹧鸪花属和香椿属的植物也有较高的杀虫活性. Some species of genera Aglaia, Trichilia and Toona contain very effective limonoids against insects as well.
他拿起一小截绳子，飞快地打了个活结。He took a short length of rope and swiftly tied a slip knot.这时,赛克斯一滑,掉了下去,活结套在了他的脖子上.Then Sikes slipped and fell ! The noose was round his neck....
The roads had been cleaned of snow, but the roof tops, grass and trees were still sugared white.道路上已无积雪, 但屋顶、草地和树上依然披着银装。They sugared trees to catch moths.他们在树上撒糖捕蛾.The roads had been cleaned of snow, but the roof tops ,...
That remark does not refer to [ direct at ] her.那句话不是指她说的.Who will direct at the concert?音乐会谁来指挥?The brunt of her argument is direct at the trade union leader.她的言论的锋芒指向工会领袖....
These birds navigate by the sun.这些鸟靠太阳确定方向。He was not able to walk without a cane and could only navigate steps backwards...没有手杖他无法走路，只能小心翼翼地向后退。When travelling on fast roads at night it is impossible to drive and naviga...
你就是思想的源泉。You are a fountain of ideas.梦境可以成为艺术家灵感的丰富源泉。Dreams can be a rich source of inspiration for an artist.书是知识的源泉.A book is a well of knowledge....
This hole was a scant .23 inches in diameter.这个洞眼的直径只有0.23英寸。the diameter of a tree trunk树干的直径A diameter passes through the center of a circle.直径从圆心穿过....