He's often hoarse at the end of the day because he performs his dialogue out loud as he writes it. (This may account for its strikingly naturalistic quality.)

在一天结束的时候，他通常声音嘶哑，因为他在写作对话的时候总是大声地把对话喊出来。（这也许可以解释它引人注目的自然主义性质。）