We have this day send you , per sample post , a sample of no. 3 mixed oats , which we quote $10.00 per qr. , f.o.b. sam francisco .是什么意思_We have this day send you , per sample post , a sample of no. 3 mixed oats , which we quote $10.00 per qr. , f.o.b. sam francisco .在线翻译_英语_读音_用法_例句