firm abs 马甲线 ab=abdominal腹肌 /æbˈdɑːmɪnl/
It's her dream to have flat firm abs and that's why she goes to the gym everyday.
six-pack abs 六块腹肌
The "bicycle" workout will help you get six-pack abs fast.
spot sb. 帮某人扶一下
Can you spot me? I need a spotter. reps（=repetition）个 I did shoulder press for 12 reps at that weight.
Set 组 Do 4 sets of 15 reps.