YOU SAID:

add one third of a cup of milk

INTO JAPANESE

牛乳1杯の3分の1を加える

BACK INTO ENGLISH

add a third of a glass of milk

INTO JAPANESE

コップ1杯の3分の1を加える

BACK INTO ENGLISH

add a third of a glass

INTO JAPANESE

グラスの3分の1を加える

BACK INTO ENGLISH

add a third of a glass