1) Take a rain check

　　thank you for the invitation, but Ill have to take a rain-check on it.感谢邀请，但我这次不能来，日后定当践约。

　　Can I take a rain check?

　　你能改天再请我吗?

　　Ill have to take a rain check on that.

　　这事我只好推迟了。

　　Give me a rain- check!

　　请再次给我机会!

　　Thanks for the invitation, but Ill have to take a rain-check on it.

　　你的邀请我心领了，感谢盛意改日一定践约。

　　Thanks for the invitation, but Ill have to take a rain check on it.

　　你的邀请我心领了,感谢盛意改日一定践约

　　2) lost count 弄不清楚

　　I have lost count of time.

　　我记不得过了多长时间。

　　Ive lost count of how many times that actress has been married.

　　我已记不清那位女演员结过几次婚。

　　I have bought so many new books these years that Ive lost count of them.

　　这几年我买的书太多了，不知道一共有多少本。

　　They lost a number of planes; the count takes a day or so to firm up.

　　他们损失了若干飞机，具体数字要一，两天才能证实。

　　I lost count of the number of times I saw him with bandages and plasters on his fingers.

　　我已记不清有多少次看见他的手指上缠着绷带或胶布了

　　3) be in another world 精神恍惚;魂不守舍

　　4) make yourself at home 随意，随便

　　5) save your breath 省口气吧;别白费口舌了

　　6) make sense 有意义，理解

　　7) cost sb. an arm and a leg 非常昂贵

　　8) burn a hole in ones pocket 很快地被花光

　　9) fill ones shoes 很好地顶替;令人满意地替代

　　10)is ice cold 表示理所当然

　　11)like apples and oranges 用来表示无法相比的事物

　　13)lose ones train of 忘记

　　14)meet each other half way 相互妥协，让步

　　15)on the dot 准时;正点

　　16)once and for all 最后一次;干脆

　　17)out of earshot 不在听力所及范围

　　18)out of this world 非常好

　　19)play by ear 随机应变，视情形而定

　　20) ring a bell 令人想起某件事;听起来耳熟

　　1) Take a rain check

　　thank you for the invitation, but Ill have to take a rain-check on it.感谢邀请，但我这次不能来，日后定当践约。

　　Can I take a rain check?

　　你能改天再请我吗?

　　Ill have to take a rain check on that.

　　这事我只好推迟了。

　　Give me a rain- check!

　　请再次给我机会!

　　Thanks for the invitation, but Ill have to take a rain-check on it.

　　你的邀请我心领了，感谢盛意改日一定践约。

　　Thanks for the invitation, but Ill have to take a rain check on it.

　　你的邀请我心领了,感谢盛意改日一定践约

　　2) lost count 弄不清楚

　　I have lost count of time.

　　我记不得过了多长时间。

　　Ive lost count of how many times that actress has been married.

　　我已记不清那位女演员结过几次婚。

　　I have bought so many new books these years that Ive lost count of them.

　　这几年我买的书太多了，不知道一共有多少本。

　　They lost a number of planes; the count takes a day or so to firm up.

　　他们损失了若干飞机，具体数字要一，两天才能证实。

　　I lost count of the number of times I saw him with bandages and plasters on his fingers.

　　我已记不清有多少次看见他的手指上缠着绷带或胶布了

　　3) be in another world 精神恍惚;魂不守舍

　　4) make yourself at home 随意，随便

　　5) save your breath 省口气吧;别白费口舌了

　　6) make sense 有意义，理解

　　7) cost sb. an arm and a leg 非常昂贵

　　8) burn a hole in ones pocket 很快地被花光

　　9) fill ones shoes 很好地顶替;令人满意地替代

　　10)is ice cold 表示理所当然

　　11)like apples and oranges 用来表示无法相比的事物

　　13)lose ones train of 忘记

　　14)meet each other half way 相互妥协，让步

　　15)on the dot 准时;正点

　　16)once and for all 最后一次;干脆

　　17)out of earshot 不在听力所及范围

　　18)out of this world 非常好

　　19)play by ear 随机应变，视情形而定

　　20) ring a bell 令人想起某件事;听起来耳熟