翻译　As the addict’s tolerance increases（由于嗜毒者对药物的耐受性增加了），he requires ever larger doses of the drug.
同义替换　indulge v. 满足；沉迷于obsess v. 迷住；使着迷
fracture [?fr?kt??(r)] v.（使）断裂，（使）折断 n.裂缝，裂痕，折断；骨折；破裂
例句　He had several injuries, including three fractures.
他多处受伤，其中三处骨折。
翻译　The boy fell from a tree and fractured his arm（折断了胳膊）.
同义替换　crack v. 裂开，爆裂
indignation [??nd?g?ne??n] n. 愤怒，愤慨，义愤
例句　Reports of child abuse aroused public indignation.