Lateral sounds are consonants that form when airflow is obstructed during pronunciation and eject from the side of the tongue, including clear and vague /l/.
Appears before vowels and at the beginning of the word, pronounces a clear /l/, pronounces the end of the tongue against the upper gums, and the airflow ejects from the gaps on both sides of the tongue, and the vocal cords vibrate as the pronunciation takes place.
例词：letter，later，lead, let, etc.
Appears before consonant and at the end of syllables, with vague /l/, the front of the tongue is subverted and the tongue is raised back, the tongue surface forms grooves, air flow flows out from the front of the tongue, and the vocal cords vibrate when pronounced.
例词：apple, table, will, shall, travel, etc.
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