Waiting is painful. Forgetting is painful. But not knowing which to do is the worst kind of suffering.等待令人煎熬，遗忘带来痛楚，但最折磨的，是徘徊于二者之间的彷徨。
本句出自：保罗·科埃略（Paulo Coelho）
巴西著名作家。1988年出版著名寓言小说《牧羊少年奇幻之旅》，是历史上作品最畅销的葡萄牙语作家。
解析:
painful /ˈpeɪnfl/
adj. 令人疼痛的；令人痛苦的；费力的
例句：
The injection was quite painful.
注射相当疼。
It was a painful decision to leave her hometown.
离开家乡对她来说是个痛苦的决定。
常用搭配
painful memory (痛苦的回忆)
painfully obvious (明显得令人难受)
