Translation

重大な局面 / 時点 / 節目

Meaning

A juncture is an important point in time, especially one when a decision, change, or danger appears. It sounds formal and often appears in phrases like at this juncture.

Examples

• この局面で計画を変えるのは危険です。
  At this juncture, changing the plan would be risky.
• 会社は重大な局面を迎えています。
  The company has reached a critical juncture.