我发现了问题。boto 3的列表对象API只列出了有限的结果（~1000个对象）。要超出此范围，您可能需要使用paginator。
下面是一个示例代码，你可以忽略不需要的行。

import boto3
s3 = boto3.client('s3')
paginator = s3.get_paginator('list_object_versions')
pages = paginator.paginate(Bucket='bucket_name', Prefix='')
for page in pages:
    for obj in page['Versions']:
            print(obj['Key'])

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import boto3
# Create an S3 client
s3 = boto3.client('s3')
# Specify the bucket name
bucket_name = 'your_bucket_name'
# List all versions of objects in the bucket
object_versions = s3.list_object_versions(Bucket=bucket_name)
# Print information about each version (including delete markers)
for version in object_versions.get('Versions', []):
    print(f"Key: {version['Key']}, VersionId: {version['VersionId']}, IsDeleteMarker: False")
# Print information about each delete marker (if any)
for delete_marker in object_versions.get('DeleteMarkers', []):
    print(f"Key: {delete_marker['Key']}, VersionId: {delete_marker['VersionId']}, IsDeleteMarker: True")

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此代码将打印所有版本的信息，包括版本化对象及其删除标记。