rú / guǒ / chāo / chū / zuò / yòng / yù / chéng / xù / jiù / wú / fǎ / fǎng / wèn / zhè / gè / biàn / liàng

如果超出作用域，程序就无法访问这个变量。

If it goes beyond the scope, the program cannot access this variable.