与一些欧洲国家不同，一个身强力壮的移民要靠政府供养是极其困难的。
Unlike in some European countries, it is extremely hard for an able-bodied immigrant to live off the state.
要计算目前有多少滞销库存将被浪费是极其困难的。
It is incredibly difficult to calculate how much dead stock currently goes to waste.
重建过去的气候变化是极其困难的，因为在欧洲和北美，几个世纪前才开始系统的天气观测。
Reconstructing the climate changes of the past is extremely difficult, because systematic weather observations began only a few centuries ago, in Europe and North America.
应用推荐