问题: sound
The girl, then 16, began testing her area's river -- the Ohio. With a simple device she herself had designed, she collected 350 water samples from the Ohio and its tributaries over ten weeks. Reading scientific journals, she taught herself to analyze the samples. It was the most scientifically sound project for someone her age.
What does sound mean here,please?
解答:
Sound project解说是最全面,最有深度的实验。
It was the most scientifically sound project for someone her age.
整句的意思是:
在她的同龄中这是一项最全面最有深度的科学系统实验
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