The first one is Quest mode where you have to go from novice to professional.

第一个是你必须从新手去到专业人士的探索方式。

youdao

Perform epic deeds in Quest Mode , see if you can make the grade in Test Mode or try and master any of the brain games in Practice Mode !

演出史诗的事迹在追求模式，看看您是否可以使级在测试模式，或尝试和掌握任何脑游戏，在实践模式！

youdao

You can choose from two modes: One lets several players fight the evil creatures as a common goal or take up a quest; the second mode lets you fight other players directly.

你可以选择两种方式：一种是几个玩家共同打倒一个怪物，或者开始探索。第二种是直接和其他玩家对战。

youdao

To simply level my character high enough to complete the next level of story quest, I either grind or join a different game mode.

FORBES: 'Guild Wars 2' - A Grind By Any Other Name