n.松香；樹脂
Dry rosin is best in tropic and soft rosin in cold climate. 干的松香在熱帶最適用，而軟的松香適用于寒冷的氣候。
The world gum rosin production appeares to decline in recent years. 目前世界上脂松香生產(chǎn)在大多數(shù)國(guó)家出現(xiàn)下降趨勢(shì)。
Your voice sounds like the rosin sinking into the sunlight, which is quite fresh. 你的聲音如同沉在日光里的松脂,是新鮮的。
n.高空鼻竇炎
n.煤油
n.散文體；沒趣；平凡
n.[生化]精子酵素；精子頭粒蛋白
