fruitful

a.多产的；有成效的

frown, frowsty, frowsy, frowzy, froze, frozen, FRS, fructification, fructify, fructose, frugal, frugality, frugally, fruit, fruit machine, fruit salad, fruit-cake, fruit-fly, fruit-knife, fruiterer, fruitfully, fruitfulness, fruition, fruitless, fruitlessly, fruitlessness, fruity, frump, frumpish, frustrate, frustrated, frustrating, frustration, fry, fry-up, fryer (also frier), frying-pan, frying-pan (US fry-pan), FT, fuchsia,