如何在Material-UI CardHeader字幕文本前显示计时器图标？

import React, { useState, useEffect } from 'react';
import { Card, CardHeader, Avatar, IconButton } from '@material-ui/core';
import TimerIcon from '@material-ui/icons/Timer';

const Timer = () => {
  const [time, setTime] = useState(0);

  useEffect(() => {
    const interval = setInterval(() => {
      setTime(prevTime => prevTime + 1);
    }, 1000);

    return () => {
      clearInterval(interval);
    };
  }, []);

  return (
    <IconButton>
      <TimerIcon />
      {time}
    </IconButton>
  );
};

<Card>
  <CardHeader
    avatar={
      <Avatar>
        <Timer />
      </Avatar>
    }
    title="Card Title"
    subheader="Subtitle"
  />
</Card>