在某方面某领域应该用介词in,is是be动词,“是”的意思
如果帮到你,请记得采纳,O(∩_∩)O谢谢
They made a new discovery is astronomy
They made a new discovery is astronomy
他们在天文学上有了新发现
他们在天文学上有了新发现
英语人气：229 ℃时间：2020-05-07 13:43:16
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