If the artificial Sun remained stationary, the birds would shift their direction with respect to it at a rate of about 15 degrees per hour.
这个介词词组很重要,不可省略。词组意思是“相对于/针对于太阳(方向)”。没有这个词组的话,那么,鸟类以每小时15度改变方向,这个15度就失去了参照物——太阳。it 指太阳。
托福TPO11阅读2一个句子:If the artificial Sun remained stationary, the birds would shift their direction with respect to it at a rate of about 15 degrees per hour.这里with respect to it感觉去掉也可以,为什么要这么用,此句上一句是 In experimenting with artificial suns, Kramer made another interesting discovery.
If the artificial Sun remained stationary, the birds would shift their direction with respect to it at a rate of about 15 degrees per hour.
这个介词词组很重要,不可省略。词组意思是“相对于/针对于太阳(方向)”。没有这个词组的话,那么,鸟类以每小时15度改变方向,这个15度就失去了参照物——太阳。it 指太阳。
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