我要半斤菜心
ngo5 jiu3 bun3 gan1 coi3 sam1
I'd like half a catty of choy sum
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Pronunciation

菜心
coi3 sam1
choy sum
Recorded Cantonese
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Use 食 with 菜心 when talking about eating; 要菜心 makes a brief food order.
我要半斤菜心
ngo5 jiu3 bun3 gan1 coi3 sam1
I'd like half a catty of choy sum
我要三斤菜心
ngo5 jiu3 saam1 gan1 coi3 sam1
I would like three catties of choy sum