abs是 腹肌abdominal muscles的缩写，six-pack abs六块腹肌。

【例句】
Every star in Hollywood wants six-pack abs.
好莱坞明星都想拥有六块腹肌。

But after getting into the habit of exercising, both can now show off six-pack abs.
但健身习惯养成后，二人的6块腹肌都清晰可见。