Using a solution of tanbark, the tanner treated the cowhide, transforming it into supple leather.

那位制革工人鞣料树皮溶液处理了一下母牛皮，把它做成了柔韧皮革。

I use body lotion to keep my skin supple.

我液来保持皮肤柔软光滑。

Her skin had stayed soft and supple.

她皮肤一直柔滑而有弹性。

She gets along well with people because of her supple nature.

她与大家相处很好, 因为她天性柔和。

He was gradually getting more supple.

他身体逐渐可以动自如。