adj.最大的；最高的

She will be a maximal help here. 她到这儿将是个极大的帮助。

She obtained maximal benefit from the course. 她从该课程中获益极大。

Forty degrees centigrade is the maximal temperature at which this chemical reaction will occur. 四十摄氏度是这个化学反应将会出现的最高温度。