I can only think of one backward-compatible change to output: type restriction.

我认为只有一个对输出的向后兼容改变：类型约束。

youdao

I can only think of one backward -compatible change to output: type restriction.

我认为只有一个对输出的向后兼容改变：类型约束。

youdao

I can only think of one backward - compatible change to output: type restriction.

我认为只有一个对输出的向后兼容改变：类型约束。

youdao