They tried to whistle up some help.
他们想通过呼吁获得一些支援.
《简明英汉词典》
He had to whistle up some new ideas for lessons.
他只好勉强给上课的教材添些新内容.
辞典例句
Please whistle up all the dogs quickly.
赶快吹哨把狗召回来.
互联网
Life's not easy for a good teacher whistle up new ideas for lessons every day.
当一名好老师不容易,每天都得为功课想出些新招.
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