她嘲弄地笑了笑，我知道她是因为我失败了而感到高兴。

She smirked and I could tell she was happy that I had failed.

youdao

她把一只手叉着腰，嘲弄地咧嘴而笑，而此时我已怒火中烧。

She put a hand on her hip, grinning derisively, while I seethed with rage.

《柯林斯英汉双解大词典》