whistle in
英 美
He heard a whistle in the darkness.
他听见黑暗中传来一声口哨声。
The lifejacket whistle in Chief Mate's cabin missing.
大副房间的救生衣哨子丢失。
If you whistle in a slowly increasing tone, your individual notes will deviate in small-enough amounts from the acceptable threshold to produce recognized tonal events.
如果以缓慢升高的音调吹口哨,则您个人的音调与生成可识别的音调事件的可接受阈值之间会有极小的偏差。
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