optimal /ˈɑːptəməl/ adjective Learner's definition of OPTIMAL
formal
: best or most effective : optimum最佳的;最优的 -
He keeps his engine tuned for optimal performance.他把发动机调整到最佳工作状态。
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Under optimal conditions, these plants grow quite tall.在最理想的条件下,这些植物长得相当高大。
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optimal health最佳身体状况
— see also suboptimal