play the cards of (a suit) so that the last trick on which a hand can follow suit will be taken by a higher card in the hand of a partner who has the remaining cards of a combined holdingmake (assets) available
同义词:unfreezefreerelease
英汉双解大词典
unblock/ʌnˈblɒk/
1.
V(动词)
to remove a blockage from (a pipe, etc) 疏通(管道)