excessive

/ɪkˈsesɪv/📚 4620 31 2四级六级考研托福
If you describe the amount or level of something as excessive, you disapprove of it because it is more or higher than is necessary or reasonable. 过多的; 过度的

adjective [原级]过度的,过多的

Their spending on research is excessive and is slowing developments of new treatments.
他们在研究上的花销过多,正在减慢新疗法的开发。

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