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来源:雅诚德英语网
He has done it by exploring, by experimenting, by trying it out and seeing whether it works, by gradually changing it and refining it until it does work.
他通过探索、实验、尝试并观察它是否有效、逐步改变并完善它,直到它起作用。
He has done it by exploring, by experimenting, by trying it out and seeing whether it works, by gradually changing it and refining it until it does work.
他通过探索、实验、尝试并观察它是否有效、逐步改变并完善它,直到它起作用。