"be vital to sth."意为"对…(的存在或成功)是极其重要、极其关键的,必不可少的",例如:These measures are vital to national security.(这些措施对国防安全极其重要。)需要注意的是,如果想表达"对健康非常重要或非常有必要"时,需用介词"for",即:"be vital for one's health",例如:Regular exercise is vital for your health.(经常做锻炼对健康非常有必要。
● look forward to "盼望,期望"(to的后面要加名词或动名词结构) I've been looking forward to meeting you.我一直盼望着和你见面。<?xml:namespace prefix="o" ns="urn:schemas-microsoft-com:office:office"></?xml:namespace>