Filter out has 3 syllables.
# | Sentence | |
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1. | Some people buy eclipse glasses that filter out all harmful ultraviolet and infrared light, as well as the majority of intense visible light. The safest way to view an eclipse, however, is to project its image through a pinhole made in a card onto another piece of white card. | |
2. | Tom wears a mask to filter out pollution when he bicycles. |