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turn = change

　　vast - immense - extensive

　　with the ordinary citizen's pocketbook = affordable

enroll to one = combine

　　complement = supplement = add to

　　substitute = replace

　　so far = until present = up to now

　　rooted in = based on

　　make their way = travel

　　vulnerable--open to break-open to attack -- weak --susceptible

　　perishable 容易腐烂的= easy to spoil

　　Seething 沸腾的 --- overflowing/excited/active

　　float = stay on the top

　　be consistent with = be compatible with

　　property 财产，特征 = characteristic = attribute (名词意为"特征，属性")

　　simulated ---- artificial

　　sort --- type -- kind

　　staggering摇晃的; 犹豫的; 压倒的(多数) =overwhelming

　　string线, 绳子; 一行, 一系列 =series

　　swell -- enlargement --- expand

　　tract- area - terrain

延伸阅读：

托福词汇备考——与sleep有关的词组搭配

托福写作词汇——表示态度

托福写作高分词汇——同类词分析

更多阅读资料：
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