这里总结下自己在生活和工作中遇到的，那些容易读错，或者听错的英语惯用法。有时候这些错误是因为中文习惯，有时候是因为读音，总之都是自己容易犯的错误。总结在这儿，有时间就会不断更新这个部分。

矩阵或者张量 size 的读法

中文一般 3x4x5 的矩阵我们会说 3乘4乘5 的矩阵，但是英语虽然也可以用 times 这个词，但是更多的时候用的是 3 by 4 by 5。

read powers and roots

How do you read powers and roots?

“4th root of five” can be read as “quad root of five”, but 4-th root is no way incorrect and both ways are interchangeable.

Similarly “fifth root” and “quintic root” are both acceptable.

When you get to say 6th root people would understand it easier if you read “sixth root” than “hex root”.

This ought to answer your question on x√2 as well, with generalised reading of “x-th root of two”.

5^3 is read “five cubed”. For a^x you simply read “a to the power of x” for x greater than or equal to 4.