| 释义 |
firm up firm (sth) up — phrasal verb with firm /fɜːm/ aep /fɝːm/ verb ► F0 to make a part of your body have less fat and more muscle by doing exercise: » Cycling is one of the best ways to firm up your thighs.» My stomach has begun to firm up since I started exercising.Thesaurus+: ↑Exercising and training |