... whether...or... 是......还是......; 是不是......[用来引导主语从句, 宾语从句或让步状语从句] two or three days两三天 sooner or later迟早 ...
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Two or three days passed in this pleasant way.
两三天就这样愉快地过去了。
Banana leaves usually go bad in two or three days.
香蕉叶通常在两三天内就会变坏。
But these may not develop for two or three days after an overdose too late to prevent damage.
VOA: special.2009.07.08
More recent research suggested that those gains are the same whether you exercise for short periods over five days or longer sessions over two or three days.
VOA: special.2010.06.08
The Iranian News Network (IRINN) says that the UN inspectors will spend two or three days in Iran to complete their inspections of the new facility, which is still under construction.
VOA: standard.2009.10.24
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