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This is Scientific Americans 60-Second Science. Im Cynthia Graber. This will just take a minute. Saliva contains many useful components: lubricants, enzymes for breaking down food and now compounds that can reveal a persons age. Thats according to a
Ever get a sour stomach after your morning coffee? Well, you might end up switching to a dark roastbecause that coffee concoction may leave you with a happier tummy. That's according to the research presented at the American Chemical Society meeting
AGRICULTURE REPORT - Restrictions on Methyl Bromide By Mario Ritter Broadcast: Tuesday, March 16, 2004 This is Steve Ember with the VOA Special English Agriculture Report. Graphic Image Some chemicals
If your company offers a service, you may find that you have to deal with complaints from customers and clients. In this unit, we look at some phrases that may be helpful in this situation. 如果你们公司提供一项服务,你有可能发现你要处理来自顾客和代
Science and Technology Epigenetics and stress Baby blues 科技 外因遗传与压力 新生儿蓝调曲 A mother's stress while she is pregnant can have a long-lasting effect on her children's genes 母亲孕期压力过大会对孩子的基因造成长
net rate of exchange 净汇率 net realizable value 可变现净值 net realization 净变现额 net receipt 净收入;收入净额 net reinsurance premium 再保险保费净额 net rent 租金净额