to clear something by removing something that is blocking it疏通;扫除…的障碍
to unblock a pipe/drain/toilet疏通管道/水沟/厕所
He's having an operation to unblock two of his arteries.他正在接受手术,疏通两条动脉。
to make it possible to use a phone, website, etc. again(电话,网站等)解锁
Learn how you can unblock a phone number or remove it from the Auto Reject List. 学习如何给一个电话号码解锁,或是将它从自动拒绝名单上移除。