1·I looked at my dad, his knuckles swollen and cracked from farm work and his fingernails tipped with black crescents of motor oil.
我看着我爸爸，他的指关节因农活而肿胀开裂，他的指甲尖被机油染成了一轮黑色的新月。
2·On his head was a mitre of black felt decorated with silver crescents.
头戴黑毡法冠，冠上饰有银的新月。
3·Seen here within the glomeruli are crescents composed of proliferating epithelial cells.
肾小球内由增生的壁层上皮细胞组成的新月体。
4·The ratios of sclerosing glomeruli, crescents and area of interstitial fibrosis were calculated.
计算患者病理切片硬化肾小球数、新月体数和间质纤维化面积百分比。