Their instruments detected very faint radio waves at a frequency of 3 kilohertz.

他们的仪器探测到了频率为3千赫的非常微弱的无线电波。

《柯林斯英汉双解大词典》

It was very faint, but unlike the other noises she had grown used to along the way.

声音很弱，但又不象沿路她所习惯了的其它响声。

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Traditional MRI takes advantage of the very faint magnetic signals emitted by hydrogen nuclei in the sample being imaged.

传统MRI的优势在于捕捉氢原子核所发出的能够用于成像的极微弱的磁信号。

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CCDs are much more efficient at imaging very faint objects and are far less likely to be foiled by Earth-based light.

FORBES: A Star Is Born

You should also see a very faint white layer of mannite, a natural powder that is a carbohydrate and source of sweetness.

WSJ: Kelp Wanted

Whichever turns out to be right (if either does), the new object must be very faint, otherwise it would have been spotted already.

ECONOMIST: X marks the spot