The Canadian Arctic Archipelago generally receives little precipitation, and the amount of snowfall changes little from year to year.
加拿大北极群岛常年几乎没有降水,降雪量微乎其微。
Dr Hynek said: 'The abundance of these river valleys required a significant amount of precipitation.'
海尼克博士说:“如此大量河流峡谷的形成需要极为充沛的雨量”。
All three cooling agents can be used to either induce or suppress precipitation, depending on the amount that is administered and the condition of the clouds.
这3种冷却剂既能用来降雨,也能用来消雨。这主要取决于所用冷却剂的总量以及云的条件。
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