“白发的”造句

这位白发的农民默想着他过去所受的苦难.
The hoary peasant mused over his past sufferings.

白发的产生部分原因是褪黑素减少或完全停止产生褪黑素.
Gray hair results when, for some reason, the production of melanin is reduced, or stops completely.

• #白发的