I picked up a magazine from the table, and attempted to pass the time with it.
Reasoning was close and intense, but the conclusion appeared to me to be far-fetched and exaggerated
** far-fetched** improbable, not pertinent， 牵强的不切题的
exaggerate 夸张的，言过其实的
one of the articles had a pencil mark at the heading, and I actually began to run my eye over it.
The theories which I have expressed there, and which appear to you to be so absurd, are extremely practical.
appear to you to be so absurd
appear to 似乎，好像
so practical that I depend upon them for my bead and cheese
for bead and cheese 为了生计
when these men are at fault they come to me, and I manage to put them on the right scent.
at fault 出毛病，出差错
put on the right scent 重回正轨
undo some knots
undo knots 解开谜题
Those rules of deduction laid down in that article,which stirred your contempt, are precious to me in practical work.
** lay down in the article**
nothing of the sort
M ：used as an emphatic way of denying permission or refuting an earlier statement.
he has just come from the tropics, for his face is dark, and that is not the natural color for his skin, for his wrists are fair(白皙的）
we heard a loud knock, a deep voice below, and heavy steps climbing the stair.
motive
M : n-the reason that you do sth 动机
adj-producing and causing movement.发动的，运动的
salute
致意，问候
vi 致意， vt 向..致意,向...行举手礼