短語詞組短語turning -point range 轉(zhuǎn)點頻段turning g point 轉(zhuǎn)折點;拐點historical turning -point 歷史轉(zhuǎn)折點modern turning -point 現(xiàn)代轉(zhuǎn)向secondary turning bifurcation point 二次轉(zhuǎn)向分岔點turning pointbreaking point 轉(zhuǎn)折點 返回 turning point