attempt
the action or endeavor of trying to complete a task or achieve a goal, often one that is challenging
尝试
[名词]
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登录breakthrough
an important discovery or development that helps improve a situation or answer a problem
突破
[名词]
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登录to invest
to devote a lot of effort, time, etc. to something from which one expects to achieve a good result
投资
[动词]
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登录productive
producing desired results through effective and efficient use of time, resources, and effort
生产性的
[形容词]
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