[gài]
[名]
（器物上部有遮蔽作用的東西） cover; lid; cap
the lid of a box
盒蓋
hood [bonnet] of an engine
引擎蓋
bearing cover [cap]
軸承蓋
（動物背部的甲殼） shell (of a tortoise, crab, etc.)
（古時把傘叫蓋） canopy
the canopy of the heavens [sky]
天蓋
canopy
華蓋
(of a tree) stand towering with a canopy of leaves
亭亭如蓋
（耢） a farm tool used for levelling land
（姓氏） a surname
Gai Ming
蓋明
[動]
（遮掩； 蒙上） cover; shield
tuck in the quilt
蓋好被子
cover up
遮蓋
The more one tries to hide, the more is exposed.
欲蓋彌彰。
The snow covered up the fields with a white cloak.
積雪給田野蓋上了一件白色的外衣。
（打上印） affix a seal to; seal
stamp
蓋戳
take fingerprints
蓋手印
（超過； 壓倒） surpass; top; excel
excel all others in strength
力大蓋人
Cheers drowned his shouting.
歡呼聲蓋過了他的叫聲。
（建筑） build; construct
add another storey to a building
加蓋一層
There they learnt to build houses.
在那里他們學會了蓋房子。
[副]
[書] （大概） approximately; about
It is possible that such cases exist.
蓋有之矣。
About a thousand people attended the meeting.
與會者蓋一千人。
[連]
[書] （承上文申說理由或原因） because; for
it is because
蓋因
for nothing lives which doesn't die
蓋天下萬物之萌生， 靡不有死
If there are things we do not know, it is because we haven't learnt them.
有所不知，蓋未學也。