Interstate Seventy号州际公路
At Seventy到七十
Or Seventy或七十岁
Seventy Island七零岛
Seventy Eighth七十八
Seventy Islands洛克群岛所属的七十岛
Seventy elders七十个长老
Seventy Years七十年
Lesson Seventy第七十课
NUM（数词） Seventy is the number 70. 70; 七十
Seventy people were killed.
70人丧生。
N-PLURAL（复数型名词） When you talk about the seventies, you are referring to numbers between 70 and 79. For example, if you are in your seventies, you are aged between 70 and 79. If the temperature is in the seventies, it is between 70 and 79. 70多; 七十几 (指70到79之间的数字)
I thought it was a long way to go for two people in their seventies, but Sylvia loved the idea.
我认为对于两个七十多岁的人来说这是一段很长的路，但是西尔维娅却喜欢这个主意。
N-PLURAL（复数型名词） The seventies is the decade between 1970 and 1979. 70年代; 七十年代 (指1970 到1979之间的年代)
In the late Seventies, things had to be new, modern, revolutionary.
在20世纪70年代末，一切都得新奇、现代、有创意。