英语语法分析

Medicare could save hundreds of millions of dollars a year if everyone used the cheaper drug, Avastin, instead of the costlier one, Lucentis.

如果每个人都使用更便宜的药物安维汀，而不是更昂贵的雷珠单抗，那么医疗保障每年就可以节省数亿美元。

Because employment protection laws make it costlier to fire an employee, employers are more cautious about hiring new staff.

由于就业保护法使解雇雇员的成本更高，雇主在雇佣新员工时会更加谨慎。

But low-expansion glass is much costlier than soda-lime glass.

但是低膨胀的玻璃比碱石灰玻璃可贵多了。