The bottom line is, don't use double quotes to specify your -e one-line script argument.
结论是：不要使用双引号来指定以 -e 开始的一行程序脚本参数。
2
At the heart of the tractor is the electric motor, which drives the hydraulic pump that supplies power to the wheels. Both ac and DC powered motors are used in e-line tractors.
爬行器的核心是电机，其驱动液压泵为轮组提供动力，电缆爬行器可以使用AC或DC电机。
3
Olympus today announced a new camera to its line-up, the E-30.