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opt out决定不参加,撤出,退出,辞职
例句：I think I'll opt out of this game.
我不想参加这场比赛。
2. It could be a week before the Congressional Budget Office figures out how much it would cost.
figure out计算出; 解决;想出
例句：The purchase price figures out at about two million dollars.
交易的价格计算在200万美元左右。
Could you help me figure out this problem?
你能帮我解决这问题吗?
3.The pilots said they were using their personal laptops and they lost track of time.
lose track of与…失去〔保持〕联系; 了解〔忘记〕
例句：He's lost all track of her since they left school.
自毕业后, 他完全失去了和她的联系。
We took a walk along the river and totally lost track of time.
我们沿着河岸散步, 完全忘了时间。