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.
他喝了兩杯啤酒就開始口齒不清；看來他真的很不能喝酒。
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，但如果你決定要喝，請記住你酒量不好。
She felt dizzy after only a small amount of wine; she really can't hold her drink.
她只喝了一點葡萄酒就感到頭暈；她真的很不能喝酒。