-doallonecan;dosth.tothebestofone'sability;tryone'sbest;doone'sutmost;dosth.withallone'smight;tryone'shardesttodosth.;tothefull;asfaraspossible;alloneknows;putone'sbackintosth.;withallone'senergy;atthetopofone'svoice;tothetopofone'sbent;takepainsindoingsth.;toothandnail;atfullstretch;leavenostonesunturned:
makethebestofabadjob;尽力把损失减少到最小
tryone'sbesttoovercomethedifficulty;尽力克服困难