She cycled round the corner, lost her balance and fell off.

她骑车拐弯时失去平衡，摔了下来。

《牛津词典》

Her ankle caught on a root, and she almost lost her balance.

她的脚踝绊到一个树根上，身体差点失去平衡。

《柯林斯英汉双解大词典》

There was a heart-stopping moment when she lost her balance and fell backwards.

她失去平衡向后倒的那一刻着实令人心悸。

《柯林斯英汉双解大词典》

She stalled in her late 20s, explaining that she had lost her joy in golf and balance in her life.

WSJ: Tianlang Guan and the Sport That Eats Its Young | Golf Journal by John Paul Newport

After O'Connor's previous injury, Seaman had to perform on one show with stand-in partner, Russian skating champion Natalia Petrova, but he sent her sprawling when he lost his balance during a complicated routine.

BBC: Seaman has appeared alongside Kelly Holmes on the ITV show