Massage will help to tone up loose skin under the chin.

按摩有助于使颏下松弛的皮肤柔韧起来。

《牛津词典》

Trumpeter Buddy Bolden is credited with bringing a loose, raw approach to instrumental jazz with his loud tone and emphasis on improvisation.

小号手巴蒂·波登的演奏音调高亢，强调即兴演奏，把一种随意、原始演奏方法带入器乐爵士乐。

youdao

Train Triceps, avoid loose, flabby upper arm. Improve muscle tone.

练习肱三头肌，防止上臂肌肉松弛。

youdao

Ask if performers who live sedate private lives jump at the chance to cut loose on stage or on camera, and Ms. Harris's tone, up to this point sitcom light, becomes something else entirely.

WSJ: Cultural Conversation: Harriet Harris Loves Playing Bad Girls