“the sub-prime/mortgage market”是什么意思?

sub prime “the sub-prime/mortgage market”是什么意思? Sub-Prime Mortgages 是什么 有谁知道sub-prime sub-prime card company是什么意思 the prime what different between tulipomania prime and the sub prime 不要翻译 帮我回答下问题 三四句就可以!ESSAY用 in the prime of in the prime of Evaluate the role of the Bank of England in the Northern Rock collapse.Is this collapse,and that of Bear Sterns,a symptom of the wider sub prime crisis?什么是 Northern Rock collapse,Bear Sterns,wider sub prime crisis?回答得好的我再加30分- Prime prime Prime LAWRYS THE PRIME RIB怎么样 THE RESIDENCE OF THE PRIME MINISTER怎么样 THE SOLITUDE OF PRIME NUMBERS怎么样 Have you heard about the Prime Minister? the first deputy prime minister汉语翻译