YOU SAID:

His skin was so sallow and dry, he looked like an old rattlesnake.

INTO JAPANESE

彼の皮膚はひどく黄ばんで乾燥しており、まるで年老いたガラガラヘビのようでした。

BACK INTO ENGLISH

His skin was very yellow and dry, like that of an old rattlesnake.

INTO JAPANESE

彼の皮膚は年老いたガラガラヘビのように、とても黄色く乾燥していた。

BACK INTO ENGLISH

His skin was very yellow and dry, like that of an old rattlesnake.