YOU SAID:
a red box will go quite big very slowly in the car
INTO JAPANESE
赤い箱は車の中でとてもゆっくりと大きくなります
BACK INTO ENGLISH
The red box grows very slowly in the car
INTO JAPANESE
赤い箱は車の中でとてもゆっくり成長します
BACK INTO ENGLISH
The red box grows very slowly in the car
That didn't even make that much sense in English.
