all clear 是什么意思

	permission to proceed because obstacles have been removed
	a signal (usually a siren) that danger is over

	1.	You made it all clear what i'm supposed to do . 我应该做什么，你早就一清二楚了。
	2.	It is not at all clear who actually invented the telescope . 完全不清楚望远镜究竟是谁发明的。
	3.	If she gives a surprise to the public, it will be all clear gain . 如果她能一鸣惊人的话，那是意外的收获。
	4.	The first officer stood there, his head all clear of the rock . 第一个军官站在那儿，脑袋完全露在石头上面。
	5.	The sirens squealed the all clear through the rain, but neither of them paid any attention . 汽笛又在雨中长鸣起来，发出解除警报的信号，可是他们两个人谁也没有理会。
	6.	Another day of observation and you ' re all clear 再观察一天你们就都可以出院了
	7.	Needless to say , we are all clear these facts 不用说，我们大家都很清楚这些事实。
	8.	This is east - wing check - in . we ' re all clear 我们是东翼检查组，一切正常
	9.	The examples will make this all clear 本文中的示例会清楚地说明这一点。
	10.	Sound the all clear , and invite him to dinner 解除警报，请他来吃晚餐

all clear是什么意思