马虎不得 meaning in English

mustn't be careless

A good dresser always pays attention to detail , to make sure he looks professional
穿著讲究的人总是连小细节都马虎不得，好让人觉得他有专业水准。
One shouldn ' t be careless when giving gifts in different countries , at different times , in different situations , and to different people
在不同的国家，不同的时候，不同的情况下，给不同的人送什么礼，是马虎不得的。
General secretary yao reported the reason for carrying out made in china webrand and kinds of the enterprise audit standings to ministry yue , he expressed his confidence and will : made in china webrand is the window for made in china going aboard , cannot be bothered by anything , our association will do our best to create it be an acceptable mode by purchaser all over world and reputed made in china
姚秘书长当即把协会对于“中国制造走出国门上网品牌”活动的创办宗旨和各项审核标准向岳公使作了阐述，对于此次活动，协会是将其作为中国制造企业走向世界的窗口，是绝对马虎不得的一项事业，我们有信心、有能力将其打造成让全世界采购商认可的模式，为中国制造争回面子！