under-estimated是什么意思?

It is estimated预算 that there are over 450 million disabled (残废的) people in the world .The number of disabled people in India alone is probably more than double两倍 the total population of Canada.
Disability is not just something that happens to other people.As we get older,many of us will become less mobile,hard of hearing or have failing eyesight.
Disablement can take many forms形式 and occur存在 at any time of life.Some people are born with disabilities.Many others become disabled as they get older.There are many progressive disabling diseases逐渐使免疫丧失的.The longer time goes on,随着时间的推移 the worse they become情况变得越来越糟.Some people are disabled in accidents.Many others may have a period of disability in the form of a mental illness.另一些人则可能有一段功能障碍形式的精神病.
Disabled people face many physical身体上的 barriers (障碍)we just can’t imagine.How would you manage管理 if you could not get up站起来 steps从台阶上,or on to buses and trains?How would you cope应付 if you could not see where you were going or could not hear the traffic?But there are other barriers障碍 which are harder to break down.They are prejudice(偏见)and ignorance.不懂的 It is almost impossible几乎不可能的 for the able-bodied健全的 to fully understand充分理解 what the disabled go through经历,so it is important to draw attention to these barriers.
题64.From the first paragraph we can see that _________.（得分：2分）
A.the number of disabled people in Canada is small
B.the total population of Canada is quite small
C.there are many disabled people in the world
D.the number of disabled people in India is the greatest

the problem cannot be over-estimated到底应该怎么翻译?
我记得以前的语法是说,a man cannot have too many tie,翻译成男人有再多的领带也不过分!
所以这句话是不是说,这个问题再怎么重视也不过分,或者是,我们不能低估它?

ROM pricing
This is a ROM pricing information.Our estimated price for

英语翻译
Estimated:
Good it(he) is very pleasing in contacting myself with udted again I need that mecotize with the best prices these measures.To do the first orders(requests) and also I need to know all that is late in enbarcar.
有些点我实在看不懂,比如、mecotize,enbarcar等

It is said/thought/known/reported/estimated/believed/ (that)是什么意思
It is said/thought/known/reported/estimated/believed/ (that) 是什么意思最好在造个句子