1.patent n. 专利;专利权
例句:He held a number of patents for his many innovations.
他拥有多项发明的专利权 。
2.participate in 参加
例句:He planned to participate in the demonstration, but then he got cold feet.
他打算参加示威,但后来临阵退缩了 。
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1.patent n. 专利;专利权
例句:He held a number of patents for his many innovations.
他拥有多项发明的专利权 。
2.participate in 参加
例句:He planned to participate in the demonstration, but then he got cold feet.
他打算参加示威,但后来临阵退缩了 。