祸患无穷: with consequences of maximum seriousness; constant cause of trouble; incessant calamities
弭: Ⅰ动词[书面语] (平息; 消灭) quell; put down; get rid of; remove 短语和例子弭乱 suppress rebellion; 弭患 prevent troubles; remove the source of trouble; 弭谤 quell rumoursⅡ名词(姓氏) a surname 短语和例子弭宁 mi ning