请稍等,她走开一会儿,马上回来.英语怎么说

Please wait a minute. She will be around for a while and back soon.

面对面：
Please wait for a minute. She's just away and will be back soon.
电话里：
Would you hold on for a second? She's just away and will be right back.

如果是在电话中，经常说：
hold on please, she will be back soon.
如果是面对面，可说：wait a minute(moment,second), please. she will be back soon.

Wait a minute,she went for a while and will be back right now .

Please wait a minute,she'll be back soon.
英文贵在简洁,“走开一会儿”和“马上回来”是一个意思,不必全译出来.

Wait a minute, she is left and be back soon.