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...
他们开着征用的小车，在城里结队而行。They drove in convoy round the city in commandeered cars.这小车真轻巧.This car is really light.这辆小车外表看起来还不赖.The car is not bad in appearance....