God said, "Let there be light,"

God said, "Let there be light,"
and there was light.

lumin
词根含义：light;
助记词：luminary，lumin（光）+ary（东西，名词后缀）=》发光的物体=》发光体

luc
词根含义：to shine;
助记词：noctilucent：noct(night)+i+luc(光亮）+ent（形容词后缀）=》夜间发光的

lustr
词根含义：gloss, radiance，光泽，亮丽，与词根lux（光，light）相近
助记词：illustrate：in(into)+lustr(光)+ate（动词后缀）→到光里面→使明亮，使清晰（make bright）→解释，说明

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还有个词根长得和light一家长得很像不要搞混哦
lud, lus
词根含义：to play or mock;
助记词：elude，e（out）+lud（玩）+e=》出去玩=》躲避
同根词：delude, elude, illusion, ludicrous, postlude, prelude

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