對稱運動軌跡 symmetrical motion: 對稱運動symmetrical curve: 對稱曲線bel-shaped symmetrical curve: 鐘形對稱曲線bell shaped symmetrical curve: 鐘形對稱曲線bellshaped symmetrical curve: 鐘形對稱曲線下載手機詞典可隨時隨地查詞查翻譯