全部

1·It has slashed the cost of toll roads to almost one-tenth of the normal level, attracting yet more people on to fume-choked roads.

它将收费公路的成本削减至正常水平的近十分之一，然而致使更多的人走上烟雾弥漫的道路。

2·Volunteers were told to think about yawning while they breathed either normal air, pure oxygen, or an air mixture with an above-normal level of carbon dioxide.

当志愿者在正常的空气中、纯氧的环境下，或者混有超过正常的二氧化碳含量的空气中呼吸时，他们被要求要想着打哈欠。

3·Volunteers were told to think about yawning, while they breathed either normal air, pure oxygen, or an air mixture with an above-normal level of carbon dioxide.

当志愿者在正常的空气中、纯氧的环境下，或者混有超过正常的二氧化碳含量的空气中呼吸时，他们被要求要想着打哈欠。

4·The river often rises above the normal level.

河水经常高出正常水位。

5·Keeping both BMI and WC in normal level was important.

保持BMI和WC均在正常范围是重要的。

6·So we should aim for a normal level rather than a very high one.

所以我们的目标应该是一个正常水平的含量而不是一个非常高的水平。

7·Inspect bearing lubrication if the oil level is in normal level.

检查轴承是否有油，滑动轴承应检查是否达到规定油位。

8·While talking on the phone, keep conversation volume to a normal level.

打电话的时候，请把说话音量保持在一个正常的水准。

9·The production of their factory was far below the normal level last year.

去年他们工厂的产量远远低于正常水平。

10·After is sick the blood pressure to maintain at the normal level is very important.

患病后血压维持在正常水平很重要。