1. By heavens, clever as he is, I shall trap Stapleton before another day is past.
蒼天在上，過不了另一天我就要誘捕他，雖然他很狡猾。

1)By heavens
這句話是福爾摩斯在起誓，By heavens有對天起誓的意思。

2)clever as he is

as conj. 盡管

eg. Well as he does in study, he is not arrogant.
雖然他功課很好，卻一點都不傲慢。

eg. Stern as he is, he is full of sympathy.
雖然他嚴格，卻富有同情心。

3) before another day is past 明天前

2.hit me on the back在我后背上擊了一下

hit someone on the back 注意back后背前用的冠詞是the而不是物主代詞

You hit me on the back of the head.
你砸著我的后腦勺啦。

eg. I got him on the back of the head with a crowbar.
我一撬棍打在他頭的後部。

eg. He leant on the back of the sofa.
他斜靠在沙發的背上。