Since typically only 1/7th of an iceberg is visible above the ocean surface, it is almost impossible to gauge its size with the naked eye.因为通常冰山只有的1/7体积露出海面,所以仅凭肉眼几乎不可能估测冰山的实际大小. ______________________. The largest Arctic berg measured almost seven miles long and over three-and-half miles wide, but these Northern icebergs are dwarfed by their Antarctic counterparts, the largest of which measured an amazing 207 miles long and 62 miles wide.最大的北极冰山大约有7英里长,超过3.5英里宽.但是和南极冰山相比,那它们就是小巫见大巫了.最大的南极冰山有惊人的207英里长,62英里宽.