通關

In a sentence

• 我已经成功通关这款电子游戏。

  I have successfully cleared this video game.

  Here, '通关' means to clear or complete a level or the entire game in the context of video or computer games.

• 通关手续需要携带护照和签证。

  Passing through customs requires carrying your passport and visa.

  In this sentence, '通关' means to pass through customs or border checks during travel.

• 我昨天帮助朋友通关了一道很复杂的数学题。

  Yesterday, I helped a friend solve a very complex math problem.

  Here, '通关' is metaphorically used to mean solving or overcoming a challenge, in this case, a complicated math problem.