「量入為出」

(pos:動詞)
<explanation>
yue:根據#收入 嚟決定應該使幾多錢
eng:to live within one's means; to keep the expenditure within the limits of revenues
<eg>
yue:香港政府做嘅財政預算應該以量入為出為原則。 (hoeng1 gong2 zing3 fu2 zou6 ge3 coi4 zing3 jyu6 syun3 jing1 goi1 ji5 loeng6 jap6 wai4 ceot1 wai4 jyun4 zak1.)
eng:The Hong Kong Government shall follow the principle of keeping the expenditure within the limits of revenues in drawing up its budget.