by about 7 degrees centigrade 里的by是啥用法?

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by about 7 degrees centigrade 里的by是啥用法?
by about 7 degrees centigrade 里的by是啥用法?

by about 7 degrees centigrade 里的by是啥用法?
by 在这里表示上升或下降的“程度”;
结合前文部分(问题中没有给出),可能是说气温上升,或下降了大约7摄氏度.

by是介词,表示增减的幅度。如: If something increases or decreases by a particular amount, that amount is gained or lost.The earth will perhaps be warmer by about 7 degrees centigrade at the South Pole and the Nort...

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by是介词,表示增减的幅度。如: If something increases or decreases by a particular amount, that amount is gained or lost.

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这段话前面没东西了吗??

by可以做介词和副词,作为介词时,意思是:
prep. 通过;被;依据;经由;在附近;在……之前;就...来说,关于;(表连续或反复)逐个;逐批;由于;在...的时候;以...计,按
作为副词时,意思是:
adv. 通过;经过;附近;在旁边
你这里的by应该是介词,但是什么意思还要看整个句子。
by的更多用法,你可以百度一下就知道了全句是 The eart...

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by可以做介词和副词,作为介词时,意思是:
prep. 通过;被;依据;经由;在附近;在……之前;就...来说,关于;(表连续或反复)逐个;逐批;由于;在...的时候;以...计,按
作为副词时,意思是:
adv. 通过;经过;附近;在旁边
你这里的by应该是介词,但是什么意思还要看整个句子。
by的更多用法,你可以百度一下就知道了

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by 相当于汉语“了” rise by about 7 degrees centigrade 上升了大约7度
increase by 是增长了.., by 后面接的是百分数,倍数或幅度。你确定?那 The earth will perhaps be warmer by about 7 degrees centigrade at the South Pole and the North P...

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by 相当于汉语“了” rise by about 7 degrees centigrade 上升了大约7度
increase by 是增长了.., by 后面接的是百分数,倍数或幅度。

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The earth will perhaps be warmer by about 7 degrees centigrade at the South Pole and the North Pole.
翻译:地球的南北极温度也许将上升七摄氏度。
by 介词,后面接某个数据。

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