查询词典 a stumbling block

Turning our attention to difficult sentences, we felt that 'Lombroso and Ferrero, to whom criminal men were biologically less evolved, saw women as being less evolved than men and closer to primitive types and argued that natural selection had bred out their criminal tendencies' (third paragraph on page 16 of the reading) was rather complex and a possible stumbling block.

把我们的注意力转向困难语句，我们认为&龙波舒和费立诺，认为那些犯罪的男性在生物学上进化较少，认为女性比男性进化更少，接近于原始类型，认为自然选择剔除了他们的犯罪倾向。&（阅读材料第十六页第三段）相当复杂，是一个可能的障碍。

In the United States, chronic alcoholism and hepatitis C are the most common ones.

在美国，慢性酒精中毒，肝炎是最常见的。

If you have any questions, you can contact me anytime.

如果有任何问题，你可以随时联系我。