首先,他们经常与出于种种原因并非单纯为了获利而从事买卖的人士进行交易。
First, they often trade against parties who are buying or selling for some reason other than profit.
他们经受的训练教给他们要用拳头说话,而并非好言相劝。 其中很多人对未来的冲突还在严阵以待,并不去研究造成冲突的原因,以及在事态严重之前加以制止。
Trained to fight rather than persuade, many are still planning responses to future conflicts instead of studying their potential causes so as to stop them before they become a real bother.
而部分原因要归结为——遗传:有30种不同的基因可增高克罗恩病的易感性,但也并非每一个拥有这种基因的人就会得克罗恩病。
And heredity is partly to blame: some 30 different genes enhance susceptibility. But not everyone who has the genes gets Crohn's.
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