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》

But this message is everywhere very faint.

但是这个消息在哪里都很微弱。

youdao

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。

youdao

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