He lost the next page of his speech and floundered around/about for a few seconds. 他把演讲稿的下一页弄丢了，支支吾吾了几秒钟。
Although his business was a success, his marriage was floundering. 他虽然事业有成，可婚姻却陷入了困境。
Richardson resigned as chairman, leaving the company floundering. 理查德森辞去了董事长职务，公司因此在困境中苦苦挣扎。