End-to-end encryption and privacy controls.
Message and call for free* around the world.
Group conversations made simple.
Say it with stickers, voice, GIFs and more.
Reach your customers from anywhere.
英語上級者がさらに英語力を伸ばすための勉強法【目的別】 https://eednew.com/esl/how-to-study-english-for-advanced-learners/