youdao

表数据倾斜指的是特定的一些数据库分区上的某个表内的记录数与这个表所跨的所有数据库分区的平均记录数之间的差额。

Table data skew refers to a difference between the number of records in a table on particular database partitions and the average number of records across all database partitions for this table.

youdao

如果各数据库分区存储的记录数不均，就会导致不均衡的存储需求和性能问题。

If records are stored unequally across the database partitions, it can result in disproportional storage requirements and performance problems.

youdao

It's defined in CS50's library; its sole purpose in life is to ask the user for a floating point value and return it.

它被定义在CS50的函数库中，它的唯一目的是,向用户询问一个浮点数的值，然后返回它。

哈佛公开课 - 计算机科学课程节选