至关重要 /tʂɨ̂ kwán ʈʂùŋ jɑ̂ʊ/ Adjective

English: crucial
한국어: 결정적인

Example

接下来的几周将是[至关重要的]时刻。
The next few weeks are going to be crucial.
强调时间段的不可逆转性。