好消息是在人们停止使用烟草制品后心脏病发作和中风的危险立即开始下降，并且在一年后可下降达一半。
The risk of heart attack and stroke starts to drop immediately after a person stops using tobacco products, and can drop by as much as half after one year.
分娩后立即注射催产素有效地减小了出血的危险。
Injecting oxytocin immediately after childbirth effectively reduces the risk of bleeding.
卡扎菲并没有立即丢掉首都的危险，那里居住着利比亚将近一半的人口。
Mr Qaddafi is in no immediate danger of losing control of his capital, which houses nearly half Libya's population.
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