The audience was so quiet you could have heard a pin drop.
观众安静得连针落地的声音也听得见。
《牛津词典》
One could have heard a pin drop.
一根针掉在地上都能听见。
youdao
The room was so still that you could have heard a pin drop.
那房间静得针掉在地上都能听到。
《新英汉大辞典》
If you get out of the range of the GPS tracking system, it will help locate your item on a map with its unique last-seen map pin-drop feature.
FORBES: Uh Oh: I Lost My iPhone 5. Now What?
Proximo delivers a unique way to track multiple valuables with a last-seen map pin-drop feature, an active proximity dashboard and extended battery life on both its Fob and Tag.
ENGADGET: Kensington wants you to be very afraid of losing your iPhone, buy its $60 Proximo system
It might take a while before our on-the-go conversations are pin-drop clear, though.
CNN: Coming to your phone: High-definition voice
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