It is a labor to task the faculties of a man — such problems of profit and loss, of interest, of tare and tret,(8) and gauging of all kinds in it, as demand a universal knowledge.
这真是一辛苦
劳役,考验着一
全部官能,——这些赢利
损失
,利息
,
除皮重
计算
,一切都要确实数字,非得有全宇宙
知识不可啊。