The teacher explained with a smile on his face, "I know there are too many tests for you these days, but the test today is very special."

老师笑着解释说：“我知道这些天你们的考试太多了，但今天的考试很特别。”

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The boy would then fall to the grass, get up, without looking back at his mother, run as fast as he could, again, still with a smile on his face, as if nothing had happened.

然后，小男孩摔倒在草地上，再爬起来，不回头看他的母亲，再一次以最快的速度跑起来。他的脸上仍然挂着微笑，好像什么也没发生过。

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Or is he simply Putin with a smile on his face?

还是说，他只不过是微笑版的普京？

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He is here with a smile on his face and he will do his best.

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He received visitors at the table during the entire meal, always with a smile on his face.

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In the end, he drives back home with a smile on his face.

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