与两年前不同，这辆无人驾驶出租车的驾驶座上，不再有监督员。驾驶过程中，方向盘自顾自地旋转，礼让行人，保持车距，转弯减速让行，文明得令人汗颜。稍有不太便捷之处，则是在落客时，车辆只能生硬地停靠在地图上约定的地点，乘客难以跟其“商量”能否停靠在更方便的落客区。
1. It’s difficult for compilers to provide first-class support for the web
，这一点在搜狗输入法下载中也有详细论述
For decades, the Valero refinery shaped Benicia’s economy, politics and health. Now the city has become a reluctant test case of whether an oil town can reinvent itself
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