Examples:
1. Never fly straight and level for more than thirty seconds in the combat area.
2. You think he's on the level?
3. If you drop off, I'll wake you at the level crossing.
4. To the top of the mountain I need you, because you level with me.
5. The president wants the noise level on the operation turned down.
6. Noise level will be way down.
7. The information is passed to group group scrambles the necessary squadrons and you, at sector level guide our chaps to the interception.
8. On the lower level of the engineering deck.
9. It's dropped below the level in which our radar can pick it up.
10. Loud and clear! They've got to know we're on the level!
11. Such high-level material that we have no means of verifying it.
12. Just the opposite of Francisco, who is so normal and level-headed.
13. Now, then, if I could only meet her on her own level.
14. Report no movement of the Proteus since entering quadrant 7 - 4 at level D.
15. Mm-hm I’m not used to this high-level intrigue.
16. I'm not nosy. I'm on the level about this.
17. But I'm gonna level with you now.
18. Fundamentally, it's a question of crude power how to short-circuit the continuum on a five or six parsec level.
19. In the first place, is this Mr. Fisher entirely on the level?
20. This drill's purpose is to dive and fire as soon as we level.
21. Secure from battle stations when we level off.
22. Level off and bring her up to periscope depth.
Definitions of A level:
1. The advanced level of a subject taken in school (usually two years after O level)