integral:being an essential part of something 必需的;不可或缺的 ~ (to sth)
Music is an integral part of the school's curriculum.
音乐是这所学校的课程中基本的一环.
Practical experience is integral to the course.
这门课程不可缺少实践经验.

overflow:the action of liquid flowing out of a container that is already full; the liquid that flows out 溢出;漫出;溢出的液体
Stop the overflow from the cistern.
止住水箱溢水.
an overflow of water from the lake
漫出的湖水
an overflow of powerful emotions
横流的激情 

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