Definition
This idiom describes a person who has a low tolerance for alcohol and quickly becomes intoxicated or experiences adverse effects from drinking even small amounts.
酒量小
He started slurring his words after only two beers; it seems he really can't hold his drink.
他喝了两杯啤酒就开始口齿不清；看来他真的很不能喝酒。
I know you don't drink often, but if you decide to drink, please remember you can't hold your drink.
我知道你不常喝酒，但如果你决定要喝，请记住你酒量不好。
She felt dizzy after only a small amount of wine; she really can't hold her drink.
她只喝了一点葡萄酒就感到头晕；她真的很不能喝酒。