whisper,the,from,at,last,heard,the,three,playground,we,a,bus

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We three in the playground heard a whisper from the bushes at last Sunday
上个周日,我们三个在操场上（游乐场）听到灌木丛中传出低语声

或
We three heard a whisper from the bushes in the playground at last Sunday
上个周日,我们三个听到在操场（游乐场）的灌木丛中传出低语声
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at sunday 不常用,但有这种搭配,特别是用于节假日