单词与短语：
1. goal line
底线，球门线；
eg. A goal line stand by the home team held the visitors on the two-yard line.
主队在球门线前的坚强防御使客队无法在两码之内使球触地得分。
eg. The referee ruled that the ball had not crossed the goal line.
裁判裁定球没有越过球门线。
2. airtight
密封的；无懈可击的，没有漏洞的，严密的
eg. Store the cookies in an airtight tin.
将曲奇饼干存放于密封罐中。
eg. Mick had an airtight alibi.
米克有确凿的不在场证据。
3. go over
仔细检查；认真讨论；用心思考
eg. This matter will go over until the next session.
这件事将留待下次会议讨论。
eg. I won't know how successful it is until an accountant has gone over the books.
要等到会计核查完账簿，我才会知道盈利状况如何。
4. mess up
搞砸；弄糟；弄脏；弄乱
eg. He had messed up one career.
他把一份工作弄砸了。
If I messed up, I would probably be fired.
要是我搞砸了，很可能会被炒鱿鱼。
eg. hope they haven't messed up your video tapes.
我希望他们没把您的录像带弄乱。