n.松香；树脂
Dry rosin is best in tropic and soft rosin in cold climate. 干的松香在热带最适用，而软的松香适用于寒冷的气候。
The world gum rosin production appeares to decline in recent years. 目前世界上脂松香生产在大多数国家出现下降趋势。
Your voice sounds like the rosin sinking into the sunlight, which is quite fresh. 你的声音如同沉在日光里的松脂,是新鲜的。
n.高空鼻窦炎
n.煤油
n.散文体；没趣；平凡
n.[生化]精子酵素；精子头粒蛋白
