迎接高三的英文短语可以是：

Embrace the Challenge of Senior Three

迎接高三的挑战。

Welcome to the Journey of Senior Three

欢迎高三的旅程。

Set Sail for Senior Three

启航高三。

Step into Senior Three

步入高三。

Tackle the Senior Three Challenge

应对高三的挑战。

这些短语都表达了迎接高三这一重要阶段的积极态度和决心。希望这些对你有所帮助!