YOU SAID:

I shall retain the parcel

INTO JAPANESE

私は小包を保管します

BACK INTO ENGLISH

I will keep the parcel

INTO JAPANESE

私は荷物を保管します

BACK INTO ENGLISH

I will store the luggage

INTO JAPANESE

荷物を保管します

BACK INTO ENGLISH

Store your luggage

INTO JAPANESE

荷物を保管する

BACK INTO ENGLISH

Store your luggage