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three-blade propeller /ˈθɹiːblˈeɪd pɹəpˈɛlə/ n

中文：三叶螺旋桨

中文 · 三叶螺旋桨Español · hélice de tres aspasFrançais · hélice tripale
Meaning：Propulsion device with three blades that are arranged around an axle and driven by a motor.
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