sījī / tīngdào / chéngkè / shuō / dà guǎi / lìkè / dǎ / le / zuǒ / zhuǎn / xiàng / dēng

司机听到乘客说大拐，立刻打了左转向灯。

The driver immediately turned on the left turn signal after hearing the passenger say 'dà guǎi'.