expect cost的意思|示意

I expect it to earn its cost in less than three years.

我希望它在3年内赚回成本。

Manufacturers expect cost-effective battery systems that meet their stringent reliability requirements.

制造商期望用经济实惠的电池系统满足严格的可靠性要求。

Waiters expect to get a 15% tip on the cost of your meal.

服务员希望得到你餐饮费用的15%的小费。