“防晒霜”的英语表达是 sunscreen(也可写作 sunblock 或 suntan lotion(侧重于具有防晒功能的润肤露,但sunscreen更为常用) ,不过最常用且准确的还是 sunscreen )。
例句:
Don't forget to apply sunscreen before going out. (出门前别忘了涂防晒霜。)
I always carry a bottle of sunscreen with me in summer. (夏天我总是随身携带一瓶防晒霜。)