枉费waste;try in vain;be of no avail;be futile
他想尽一切办法，仍是～。All his efforts were of no avail.or:Every effort was made,but to no avail./～口舌waste of breath/～心机rack one’s brains in vain; hatch plots in vain;scheme to no avail;try in vain/～心血waste one’s efforts;All one’s efforts are of no avail. |