是的，您可以使用AWS SDK提供的copyObject方法来复制对象从目标桶到源桶。以下是一个使用AWS SDK for JavaScript的示例代码：

const AWS = require('aws-sdk');

// 配置AWS SDK
AWS.config.update({
  accessKeyId: 'YOUR_ACCESS_KEY',
  secretAccessKey: 'YOUR_SECRET_KEY',
  region: 'us-west-2' // 替换为您的区域
});

// 创建S3实例
const s3 = new AWS.S3();

// 定义源桶和目标桶的键
const sourceBucket = 'your-source-bucket';
const destinationBucket = 'your-destination-bucket';
const objectKey = 'your-object-key';

// 创建复制请求
const copyParams = {
  Bucket: destinationBucket,
  CopySource: `/${sourceBucket}/${objectKey}`,
  Key: objectKey
};

// 复制对象
s3.copyObject(copyParams, (err, data) => {
  if (err) {
    console.log(err);
  } else {
    console.log('Object copied successfully');
  }
});

请确保替换YOUR_ACCESS_KEY，YOUR_SECRET_KEY，us-west-2，your-source-bucket，your-destination-bucket和your-object-key为您自己的实际值。