及物动词：

1.使（某物）更明亮

不及物动词：

1.变得更光明

词形变化

时态lightened，lightening，lightens

英语解释

make more cheerful

become more cheerful

alleviate or remove (pressure or stress) or make less oppressive

make lighter or brighter

reduce the weight on; make lighter

become lighter

become brighter