that本身在从句中作宾语 them 多余
宾语从句的that在从句中做宾语指代 troubles,them多余
that 和them重复指代, 所以them是多余的
" them " redundant -- that already replace " technological stagnation, marketing missteps, and managerial blunders"
attempt at doing 不是idiom . 应该是attempt to do
them在这里是多余的!that引导的定语从句已经把宾语给出来了
them多余,that是形式宾语。attempt TODO
Them多余
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