短語詞組短語helm a port 左舵put the helm to port 把舵轉(zhuǎn)向左舷helm port signal 舵角信號helm port stock 舵柄helm port transon 舵桿孔加強材helm port roof 尖屋頂helm port transom 舵桿孔加強材helm port wind 舵輪風(fēng)port helm 里舵 返回 helmport