adverb [频率副词]总是，经常地，不断地
Planes flew overhead constantly.
飞机不断从头顶上飞过。
- constantly 出现在下面的课文中（提供视频、音频及笔记等可系统性学习）
- Lesson 47 Too high a price?
- Lesson 9 Royal espionage
- Lesson 18 Porpoises
单词造句:
- 网友用“Constantly”造句精选
- Surgical techniques are constantly being refined. 外科手术技术正在不断得到完善。