如何在机器人框架v4中的两个步骤之间有延迟？

from aiogram import Bot, types
from aiogram.dispatcher import Dispatcher
from aiogram.utils import executor
import asyncio

bot = Bot(token='YOUR_BOT_TOKEN')
dp = Dispatcher(bot)

@dp.message_handler(commands=['start'])
async def start(message: types.Message):
    await message.reply("Hello! This is a delayed response.")
    
    # 延迟2秒钟
    await asyncio.sleep(2)
    
    await message.reply("Delayed response after 2 seconds.")
    
if __name__ == '__main__':
    executor.start_polling(dp, skip_updates=True)