invisible
🇺🇸
/ɪnˈvɪzəbl/
🇬🇧
/ɪnˈvɪzəbl/
not able to be seen
The tiny germs are invisible to our eyes.
微小的細菌在我們的眼睛看來是不可見的。
related to services like banking or tourism, not physical goods
Tourism brings in invisible income for many countries.
旅遊業為許多國家帶來無形收入。