转折点

The process of disarmament is at a crucial turning point.

裁军正处在一个关键点。

His induction as a teacher was a turning point in his life.

他就任教师工作是他一生点。

Note the abrupt transition (arrows) from urothelium to intestinal-type epithelium in this example of intestinal metaplasia seen in a bladder biopsy.

这是一例膀胱活检标本，箭头所指处为膀胱皮突然变为肠皮点。

But for benzene, when treated with SDM-A there was a turning point in its adsorption isotherm, which corresponding to the dividing point between monomolecular and multimolecular layer adsorption.

在用SDM-A处理苯吸附时，出现形吸附等温，点正好是单分子层吸附与多分子层吸附分界点。