eighty meters high与eighty- meter-high

eighty meters high与eighty- meter-high 2 meters high 和 2-meter-high的区别 给我解释一下,twelve-meter high 还是twelve meters high eighty 期末一道英语题,题目忘了,选择题,我不敢确定,是3000-meter-high还是3000 meters high? 1 meter tall 还是1 meter high 1000meters tall 还是1000meters high 120 meters high 和120-meters-high有什么区别 eighty-eight eighty是什么意思? eighty percent还是eighty percents “high