The captain gave the order to abandon ship.
船长下令弃船。
2.theoretically 理论地
Theoretically, the price is supposed to be marked on the shelf.
从理论上说，价格是要标在货架上的。
3.launch 发射
The countdown has begun for the launch of the space shuttle.
航天飞机发射前的倒计时已经开始。
4.operation 运营
The system has been in operation for six months.
这个系统已经运行六个月了。
