zhè / ge / biàn / liàng / zhǐ / néng / zài / dāng / qián / hán / shù / de / jú / bù / zuò / yòng / yù / zhōng / shǐ / yòng

这个变量只能在当前函数的局部作用域中使用。

This variable can only be used within the local scope of the current function.