翻译：他那天下午的表演没有能保持他平时的水平.(fail to do)
问题描述：
翻译：他那天下午的表演没有能保持他平时的水平.(fail to do)
答
He failed to maintain his normal standard in his performance that afternoon.
翻译：他那天下午的表演没有能保持他平时的水平.(fail to do)
He failed to maintain his normal standard in his performance that afternoon.