She was always smiling and positive, even on days when Michael was very ill or received bad news about blood counts.

即使是在迈克尔病情严重或血压不稳定的时候，她也总是面带微笑，表现得很是非常积极乐观。

youdao

In fact, smiling can boost your mood and even your immune system.

事实上，笑可以振作精神，增强免疫系统。

youdao

It even works when you don't feel much like smiling. Just try forcing a smile for 30 seconds if you are feeling a bit negative and see what happens.

微笑能够使你和身边人进入到一种更加积极的情绪当中，甚至在你并不很想微笑时也会奏效。如果你感到沮丧，那么就试着保持三十秒钟的微笑吧，看看这样会有什么效果。

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"She responded very well to that, " he said, smiling and even tearing up a bit.

CNN: STORY HIGHLIGHTS

The secrecy was serious: when he spoke of spirits, his smiling face became deadly sober and even scared.

ECONOMIST: Mau Piailug

"We saw a steeper decline in heart rate and a faster physiological stress recovery when they were smiling, " even though the participants weren't aware they were making facial expressions, says Sarah Pressman, co-author of the study and an assistant psychology professor at University of California, Irvine.

WSJ: Stress-Busting Smiles