当然，最坏的情形是回退到使用线程来进行阻塞操作，因为这些操作确实无法转换成异步回调。

Of course, the worst case is to fall back to using threads for blocking actions that really cannot be converted into asynchronous callbacks.

youdao

当然，最坏的情形是回退到使用线程来进行阻塞操作，因为这些操作确实无法转换成异步回调。

Of course, the worst case is to fall back to using threads for blocking actions that really cannot be converted into asynchronous callbacks.

youdao