We get our friends to roll their sleeves up and get to work.
我们召集我们的朋友共同卷起袖子来做。
Scientists contribute to the well-being of mankind.
科学家为人类造福。
In times of peace, when business was bad, Hawkwood and his men would march into a city-state and, after burning down a few farms, would offer to go away protection money was paid to them.