YOU SAID:

she sells seashells on the seashore but the value of these shells will fall

INTO JAPANESE

彼女は海岸で貝殻を売るが、これらの貝殻の価値は下がるだろう

BACK INTO ENGLISH

She sells seashells on the coast, but the value of these shells will fall

INTO JAPANESE

彼女は海岸で貝殻を売っているが、これらの貝殻の価値は下がるだろう

BACK INTO ENGLISH

She sells seashells on the coast, but the value of these shells will fall