pitfall

n. 陷阱,诱惑,阴谋

The road to the conquest of cancer is long and full of pitfall.

战胜癌症的征途是漫长的，而且布满意想不到的困难。

A concealed hole in the ground used as a trap; a pitfall.

陷阱地上用做陷阱的隐藏的洞；陷阱