And root crops especially are hard to tell apart, when store-bought, from our own.

而且从商店买来的块根类作物和我们自己种的很难区分开。

If you are planting root crops, loosen the soil 25 to 30 centimeters deep to ease their growth downward.

如果你种植的是根茎作物，将土壤松25到30厘米深，以减缓它们向下的生长。

Down river from the village it is all steep banks and tiresome root crops.

从村子往下游走， 全是陡峭的河岸和令人生厌的块根作物。

There are hundreds of related plants, including rubber trees, trees that produce castor and tung oil, and the cassava, a root crop.

大戟属植物多达数百种，包括橡胶树、各种产蓖麻油和桐油的树木，以及木薯这类块根作物等。