He is no smoker, but his father is a chain-smoker.

他倒是不抽烟，但他的爸爸却一支接一支地抽（是个老烟枪）。

When is a chain-smoker most painful?

烟瘾君子什么时候最痛苦?。

He is no smoker, but his father is a chain - smoker.

他倒是不抽烟, 但他的爸爸却一支接一支地抽(是个老烟枪).

Eg. He is no smoker , but his father is a chain-smoker.

他不抽烟，但他爸爸却一支又一支不停地抽。