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》

Although some people pretend to be young, their grey hair and loose skin give them away.

虽然有些人假装年轻，但是苍白的头发和松弛的皮肤出卖了他们。

youdao

The loose skin need excision - that is a tummy tuck.

需要切除松弛的皮肤 - 这是一个肚子抱膝。

youdao

The microchips each contain a unique number and are implanted into the loose skin between a dog's shoulder blades.

BBC: Dog microchips 'to be compulsory' in England

She went to one surgeon for a tummy tuck to pull in the loose skin and another for breast augmentation.

FORBES: Fastest-Growing Plastic Surgeries

She tried not to think about how she looked right now, about the loose skin under her eyes from a night of no sleep.

NEWYORKER: The Repatriates