短語詞組短語sharp down curve 陡降曲線sharp radius curve 小半徑曲線A sharp left curve 向左急彎路sharp -radius curve 小半徑曲線d sharp curve 三維急曲線3 d sharp curve 三維急曲線Sharp Curve Sign 急轉(zhuǎn)彎路sharp curve rail 小半徑曲線鋼軌Sometimes A Sharp Curve 有時(shí)候一個(gè)急轉(zhuǎn)彎 返回 sharp curve