We could meet late afternoon or early evening.
我们可以在下午晚些时候或者晚上早些时候见面。
A I'd like to talk to you about an idea I've got.
A 我想和你谈谈我的想法。
B OK, that sounds interesting. When would you like to meet?
B 好啊，听起来很有趣。你想什么时候见面？
A Tomorrow some time? When are you free? What's best for you?
A 明天的某个时间怎样？你什么时候有空？什么时间对你最合适？
B I'm busy in the morning, but we could meet late afternoon or early evening.
B 我上午很忙，但是我们可以在下午晚些时候或者晚上早些时候见面。
A Late afternoon would suit me. I can do any time after 3.
A 下午晚些时候对我合适。下午3点以后我都行。
B Fine. How about 4:30?
B 好。4点半怎么样？

Notes注释
1 When making arrangements to meet, it is helpful to suggest different times and find out when someone is free: For example Tomorrow some time? / Tomorrow some time? : When are you free? / When are you free? : What's best for you? / What's best for you?
当安排见面的事宜时，建议几个不同的时间，然后看某人何时有空会有帮助。例如：Tomorrow some time? /明天的某个时间怎样？When are you free? /你什么时候有空？What's best for you? /什么时间对你最合适？
2 You can give details of your programme: I'm busy in the morning, / I'm busy in the morning, / but we could meet late afternoon or early evening. / but we could meet late afternoon or early evening.
你可以给出关于你的日程的细节：I'm busy in the morning, /我上午很忙，but we could meet late afternoon or early evening. /但是我们可以在下午晚些时候或者晚上早些时候见面。

Key phrases and sentences
I'd like to talk to you about an idea I've got.
OK, that sounds interesting. When would you like to meet?
Tomorrow some time? When are you free? What's best for you?
I'm busy in the morning, but we could meet late afternoon or early evening.
Late afternoon would suit me.
I can do any time after 3.
Fine. How about 4:30?

我想和你谈谈我的想法。
好啊，听起来很有趣。你想什么时候见面？
明天的某个时间怎样？你什么时候有空？什么时间对你最合适？
我上午很忙，但是我们可以在下午晚些时候或者晚上早些时候见面。
下午晚些时候对我合适。
下午3点以后我都行。
好。4点半怎么样？