He could feel his face reddening with embarrassment .

他能感到自己因为尴尬而脸红了。

His heart leaped and he felt himself reddening .

他的心在跳，他感到自己的脸红了。

She nodded , her cheeks reddening just ever so slightly .

她点点头，她的脸颊泛红只是非常轻微。

The most common side effect is irritation or reddening .

最常见的副作用是刺激或变红。

Bertha smiled , and reddening , looked more charming than ever .

伯莎微微一笑，脸一红，显得更加妩媚了。