6.His discoveries included 300 uses for peanuts and 200 uses for sweet potatoes.
他的发现包括花的三百种用途和红薯的二百种用途。
7.The peanuts and broken shells drop through (the) bottom and (are) separated by hand.The machine can also shell coffee, dry truff (jatropha), chestnuts and Nimenuts (neem nuts).