first-hand

a.第一手的，直接的

first cousin, first degree, first finger, first floor, first gear, first lady, first name, first night, first of all, first offender, first officer, first or last, first refusal, first school, first-aid, first-born, first-class, first-day cover, first-footing, first-fruit, first-rate, firsthand, firstly, firth, fiscal, fiscal year, fish, fish and chips, fish cake, fish finger (US fish stick), fish out, fish pond, fish weir, fish-eye lens, fish-farm, fish-hook, fish-kettle, fish-knife, fish-net, fish-plate,