She found him sleeping heavily, and all her efforts to awaken him were of no avail.
她发现他睡得很沉，她想唤醒他的一切努力都无济于事。
All his efforts were of no avail.
他的努力都没有用。
The doctors' efforts to save the child were of no avail.
医生为救这个孩子所做的全都白费了。
He tried and tried but all his efforts were of no avail.
他试了又试，但一切努力都不起作用。
Their attempts to explain were of no avail-he refused to believe them.
他们试图进行解释，但是毫无用处—他不相信他们。
Many remedies were employed by the physicians in his sickness, but all were of no avail.
在他病中医生们用了许多办法，但都无济于事。
Her powers of persuasion were to no avail.
她的说服力没有起到作用。
Her powers of persuasion were to no avail.
她的说服力没有起到作用。
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