He's not even very good with theoretical physics. After a brief conversation about centres of gravity, he admits that he failed his O-level in the subject.
他甚至并不擅长理论物理。简单地谈了重力中心问题之后，他承认，自己的这门课没有达到O级。
The slum has been the subject of fighting between rival criminal factions. Schools, kindergartens, health centres and shops all closed down on account of local upheaval.
这个贫民区陷入敌对的犯罪帮派的冲突，因为当地的冲突，学校、幼儿园、医疗中心和商店都被关闭。
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