“自从3月22日线路升级至今,已有三周测试时间.”英文怎么说?
问题描述：
“自从3月22日线路升级至今,已有三周测试时间.”英文怎么说?
答
It is three weeks testing time since the route upgrading on March the twenty-second.
答
Since the line upgrade started on March 22,the testing has been going on for three weeks.