The study of hydraulic grade line is an important project in navigation engineering.

在航道的整治设计中，对水面线的研究一直是一个重要课题。

Your new position may be at the same pay grade, but the new job could increase your bottom line in other ways.

你的新职位可能和以前的工作薪资级别相同，但是可以在其他方面带给你更多。

The thesis topic, some containing subtitle. Topic is under the byline, signed prior to or below a line the school, hospital, Department, grade.

论文题目，有的含副标题。题目之下是作者署名，署名之前或下边一行写作者的校、院、系、年级。

The new term begins. Grade! We are looking for new teacher. We are looking forward to our line English teacher.

新学期开始了。初三啦！我们也要换老师了。我们非常期待我们的行英语老师。

One interesting fact about disposable glove testing and AQL is manufacturers typically produce medical-grade and industrial-grade gloves on the same line.

关于一次性手套AQL(测试方法)的一个有趣事实是，制造商通常在同一生产线生产医用级和工业级手套。