求教2772-90-4 section B

向各位求教：

Traditionally, pollination by wind has been viewed as a reproductive process marked by random events in which the vagaries (vagary: an erratic, unpredictable, or extravagant manifestation, action, or notion) of the wind are compensated for by the generation of vast quantities of pollen, so that the ultimate production of new seeds is assured at the expense of producing much more pollen than is actually used. Because the potential hazards pollen grains are subject to as they are transported over long distances are enormous, wind-pollinated plants have, in the view above, compensated for the ensuing loss of pollen through happenstance by virtue of producing an amount of pollen that is one to three orders of magnitude greater than the amount produced by species pollinated by insects.

第2句中that is one to three orders of magnitude greate 中的 orders 是什么意思？这个短语怎么理解？

非正式地解释一下，是不是“数量级”的意思呢？不确定。