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Learning English for a foreigner like me is just like the process of discovery: I find a beautiful flower,but after I watch it carefully I found it is a plant. After I studied this plant I found it is on a prairie which need more to study for me.

Here are one:

Asia has been experiencing torrid economic expansion -- 8.7 percent last year -- and the bank forecasts it at a still-robust 7.6 percent in 2008, excluding Japan, despite slowdowns in the United States and elsewhere.

can the red part be interpreted as "at still high enough, i.e. 7.6 percent in 2008" or "at still robust 7.6 percent in 2008"? or "a"can ben omitted?
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Hi,

why "a" is used here? Why is 'a' used here?

Here are is one:

Asia has been experiencing torrid economic expansion -- 8.7 percent last year -- and the bank forecasts it at a still-robust 7.6 percent in 2008, excluding Japan, despite slowdowns in the United States and elsewhere.

can the red part be interpreted as "at still high enough, i.e. 7.6 percent in 2008" or "at still robust 7.6 percent in 2008"? or "a"can ben omitted?

'Robust' here means 'strong and vigorous'.

Consider these simpler examples of what you are asking about.

#1. Tom got 60% in the exam.

#2 Tom got a surprising 60% in the exam.

#3 Tom got a disappointing 60% in the exam.

The idea is that there is only one "60%', so no article is needed in example #1.

But in examples #2 and #3, we are speaking of different kinds of "60%", identified by different adjectives. Thus, we use the article 'a', since we can count these different kinds.

It's the same with a still-robust 7.6 percent.

Best wishes, Clive
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Thanks a lot, Clive.I got it very clearly.