with might and main to the best of one's ability do one's best all one knows with all one's forces
with might and main 英 [wɪð maɪt ənd meɪn]
to the best of one's ability
do one's best
all one knows
尽兴用英文怎么说
尽其全力用英文怎么说
尽其所能用英文怎么说
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