二、Please translate the 10 underlined words (翻譯下列 10 個有底線單字):

The (1)   establishment   of a gut flora is (2)   crucial   to the health of an adult, as well the (3)   functioning   of the gastrointestinal (4)   tract  . In humans, a gut flora similar to an adult's is formed within one to two years of birth. The (5)   traditional   view of the gastrointestinal tract of a normal fetus is that it is (6)   sterile  , although this view has been (7)   challenged   in the past few years. (8)   Multiple   lines of (9)   evidence   have begun to (10)   emerge   that suggest there may be bacteria in the intrauterine environment.