“于冰”是个多义词，它可以指于冰（青岛市实验小学语文教师）, 于冰（肿瘤外科医生）。
鱼在卖出之前保存于冰和盐中。
青取之于蓝，而青于蓝；冰，水为之，而寒于冰。
The dye extracted from the indigo is bluer than the plant; so is the ice colder than the water.
沉积于冰前湖底或海底的细粒沉积物中间的大石块。
A large rock fragment, deposited in the midst of the fine-grained sediments on the floor of a proglacial lake or of the sea.
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