比较线【alternative line】指的是选线或定线时选出的作为比较方案的路线。
我基本揣摩出一个比较精确的时间表，并学会了一旦生产线停止，如何让搅拌机跳过一批。
I figured out a precise schedule and learned how to tell the mixer to skip a batch when the production line stopped.
与项目建设图比较，那些岛屿的基础线似乎很完美。
When compared to maps of the proposed project, the basic outline of the islands appears to be substantially complete.
直到今天，苹果公司的产品线相对其它公司而言还是比较少的。
Even today, Apple's product lineup is relatively sparse compared to the product offerings of other companies.
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