masking 是什么意思

	n. 伪装；化装；掩蔽；掩模。

	the act of concealing the existence of something by obstructing the view of it; "the cover concealed their guns from enemy aircraft" 同义词：cover, covering, screening,
	scenery used to block the audience''s view of parts of the stage that should not be seen 同义词：masking piece,
	the blocking of one sensation resulting from the presence of another sensation; "he studied auditory masking by pure tones"

	1.	Two masked men held up a mail van . 两个戴面具的人拦路抢劫了一辆邮车。
	2.	Facial painting is an adaptation of the mask . 脸谱是由面具演变而来的。
	3.	The substrate is first covered by a mask . 首先在基片上覆盖一个掩膜片。
	4.	The mask fitted tightly over his face . 他用面具把脸蒙得严严的。
	5.	Perhaps masks can be dispensed with in time . 说不定到时候可以免戴防毒面具。
	6.	A mask is a transparent sheet of plastic . 蒙片是一张覆盖在图版上的透明塑料片。
	7.	Rioters donned handkerchiefs as gas masks . 暴乱者扎上手帕捂住口鼻作为防毒面具。
	8.	Lily said to herself that the mask just drop . 丽莉心中说道，现在面具该摘下来了。
	9.	You can cover your eyes with an opaque eye mask . 你可以用不透光的眼罩把眼睛蒙住。
	10.	We could not fire , as we were masked by our first line . 第一线挡住，我们无法射击。

masking是什么意思