Definition
to commence a challenging or lengthy journey with resolve
启程（長途或艱難的）
They decided to strike out from the city to bravely embark on a challenging expedition.
他們決定離開城市，勇敢地踏上一場艱難的探險。
Despite facing numerous obstacles, she struck out on this difficult journey with unwavering determination.
儘管面臨無數障礙，她仍以堅定的決心開始了這段艱難的旅程。
In search of new opportunities, they struck out from their small town to begin a long journey.
為了尋找新的機會，他們離開小鎮，開始了長途旅行。