Soot is the product of the imperfect combustion of fuel.煤烟是燃料不完全燃烧的产物.... a wall blackened by soot.被煤烟熏黑的墙壁The parks and squares looked grim under a mantle of soot and ash.在一层烟尘的笼罩之下，公园和广场显得阴沉沉的。Soot is usually the produ...
Pear trees are grafted on quince rootstocks.梨树被嫁接到榅的根茎上。Such rootstocks or cultivars were reproduced true to type by vegetative propagation.这些钻木和品种,通过无性繁殖长成和亲本一样的类型.Apple orchards comprised mainly of standard trees on se...
She has hazel eyes.她有一双淡褐色的眼睛.They were standing in the shade of hazel bushes.他们便站在浓荫的榛树下.The Country Mouse was sitting under a hazel thicket plucking nuts.乡鼠正坐在榛树丛下摘硬果....