at-grade的意思|示意

This paper is to evaluate the operational efficiency of intersections only in terms of average waiting time and average number of vehicles that have to wait before the at-grade intersections.

本文仅就车辆在平面交叉口前的平均等待时间和平均车辆数来评价交叉口的运行效率。

In general, safety of at-grade intersections would be improved by making clear the road right, reducing driving speed and providing enough visual distance.

提出了交叉口安全保障的一般措施，并具体介绍了明确路权、降低车辆行驶速度和增加交叉口行车视距的方法。

All the students in Class l, Grade 9 at Woodland School agreed they loved going to the movies.

伍德兰学校九年级一班的所有学生一致认同他们喜欢看电影。

At the 5th grade level, girls routinely outperform boys in every subject, including math and science.

在五年级阶段，女生通常每一门学科都比男生表现更佳，包括数学和理科。

Of course, it might be that, at each grade, men do more work than women, to make themselves more eligible for promotion. But that explanation, too, seems to be wrong.

当然，这可能出现在每个等级，男性做比女性更多的工作，使自己更符合晋职的标准。

She noted, many young people are especially risk averse at school—afraid that one low test score or mediocre grade could cost them a spot at a selective university.

她指出，许多年轻人尤其不愿意在学校冒险，担心一次考试的分数低或成绩差会让他们失去进入名牌大学的机会。