请说慢一点的英文表达是 "Could you speak more slowly, please?" 或者 "Can you slow down your speaking, please?"
这是一种礼貌的请求语气，用于请求对方说话语速慢一点，以便更好地理解。
例句：
Could you speak more slowly, please? I'm having trouble understanding you.
Can you slow down your speaking, please? My Engpsh is not very good.
中文翻译：
请你说慢一点好吗？我听不懂。
请你说慢点好吗？我的英语不是很好。