ลดต่ำลง(lót dtàm long)

[to] drop; decline to a lower level (intrans.)

to become lower in level, amount, value, or intensity; to decrease or drop (e.g., temperature, prices, water level, quality)

[to] lower; reduce to a low level (trans.)

to make something lower in level, amount, or value; to bring down (often phrased as ลดลดlót1[to] reduce; decrease; lessen; drop2[to] lower (price); discount; mark down…ให้ต่ำลง)