YOU SAID:
she sells seashell by the seashore
INTO JAPANESE
彼女は海岸で貝殻を売る
BACK INTO ENGLISH
She sells shells at the beach
INTO JAPANESE
彼女は浜で貝殻を売っています
BACK INTO ENGLISH
She is selling shells at the beach
INTO JAPANESE
彼女は浜で貝を売っています
BACK INTO ENGLISH
She is selling shellfish at the beach
INTO JAPANESE
彼女は浜で貝を売っています
BACK INTO ENGLISH
She is selling shellfish at the beach
You've done this before, haven't you.