A second group of explanations suggests that " coethnics " work together more effectively because they understand each other better or can ostracise shirkers .
第二类解释表明“同种人”合作更有效，因为他们彼此更加了解，或者可以排斥逃避者。
If a minor but ambitious firm like salomon brothers tried to by-pass the managing underwriter and go direct to a client , the underwriter would ostracise it and give it a bad name on wall street .
After russian troops pushed into georgia in august , america wanted to ostracise the kremlin while germany appeared eager to return to business as usual .
