尽管一定的证据表明AHI最初的在SAH在当前看来是有限的，许多证据明显暗示这个时间是有效的。
Although quantitative evidence of AHI's initiatives at SAH are limited at present, anecdotal evidence clearly suggests that these practices are working.
下一个合理的问题是这种检测是否真的和它看起来的那样好，如果它真正是一个进步，你可能会问这个检测多长时间是有效的。
The next logical question is whether this test is really as good as it seems. And if it really is a major advance, you might be asking how soon the test will be available.
重要的是要有效地利用时间。
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