1)lifetime,n.一生,终生2)A whole-life policy gives you protection for you life time.,终生险保一生。3)All creatures are mortal.,一切生物终有死。4)life span test,终生5)life,n.生命，生存;一生，寿命;生活;生物6)generation,n.产生,发生;一代(人)
用法和例句
lifetime average
(产奶量) 终生平均
He lived single all his life.
他终生过着光棍生活。
Life-long Learning, Life-long Education and the Reform of Higher Education;
终生学习、终身教育与高等教育的改革
till [to] one's dying day
直到死的日子,终生
He struggled for freedom all his life.
他终生为自由而奋斗。
hold a life tenancy of a house
终生租用某所房子.
I've got six pences, last all my life.
我有六便士，终生都可用。
One wrong thought may cause a lifelong regret
一念之差铸成终生之恨
a lifelong hatred of tyranny
终生对暴政疾恶如仇
The injury invalided him for life
那伤使他终生残废。
Birds often pair for life.
鸟儿常常终生配对。
a lifelong advocate of disarmament
为裁军奋斗终生的人.
He was banished (from his homeland) for life.
他被终生流放（他乡）.
She'll rue the day she married him.
她同他结婚将遗恨终生。
Our sincere congratulations on your happy marriage and our best wishes to you two for a lifetime of happiness.
新婚之喜，献上最美好的祝福：恩爱终生，幸福终生。
Involuntary terminations must be reported concurrent with the termination.