ลงมา

[to] come down; descend

to move from a higher place to a lower place toward the speaker or a nearby point

down toward the speaker (directional complement)

used after another verb to indicate downward motion toward the speaker or a reference point here (e.g., วิ่งลงมา, เดินลงมา)

[to] decrease; come down (to a level)

to become lower in amount, level, or value; to drop to a specified figure (e.g., ราคาลงมาอยู่ที่…)

up to; [number] and under

used after a number, rank, or level to mean that number and any lower one (e.g., อายุอายุaa-yú1age2lifespan; service life3[to] be X years old 12 ลงมาลงมาlong maa1[to] come down; descend2down toward the speaker (directional complement)3[to] decrease; come down (to a level)4up to; [number] and under = age 12 and under)