切尔西在成都219
前沿的英文：
1. at the forefront of“……的前沿”“处于……最前列”
例句：They have been at the forefront of the campaign for political change.
他们一直处于政治变革运动的前沿。
2. leading edge “前沿”“居领先优势”
例句：I think Israel tends to be at the leading edge of technological development.
我认为以色列会走在技术的前沿。
3. frontier n.前沿；边界；国境
Rugged individualism forged American’s frontier society.
坚定的个人主义铸就了美国这个前沿的社会。
4. on the front end of “在……的前沿”
Younger people tend to outnumber older people on the front end of a technological shift.
在技术变革的前沿，年轻人的数量通常会超过老年人。
