yīn yuhk sāang choi fāan ké sāam màhn jih
jin1 juk6 saang1 coi3 faan1 ke2 saam1 man4 zi6
A bacon, lettuce, and tomato sandwich.
Personal Note
For a sandwich with a short English name, BLT has a really long Chinese name, so in Hong Kong I would order this in the company cafeteria when I really wanted to practice my pronunciation..