YOU SAID:

They're always departing but thenever leave and when they arrive they're always full but they're alwaysdeparting and they never leave yet they're always ful

INTO JAPANESE

彼らはいつも出発しているが、決して出発しないし、彼らが到着したとき、彼らは常にいっぱいですが、彼らは常に出発し、彼らはまだ去ることはありません、彼らは常に満ちている

BACK INTO ENGLISH

They are always leaving but never leave and when they arrive they are always full but they always leave and they still don't leave, they are always full

INTO JAPANESE

彼らはいつも去るが、決して去らないし、彼らが到着したとき、彼らは常にいっぱいですが、彼らはいつも去り、彼らはまだ去らない、彼らはいつもいっぱいです

BACK INTO ENGLISH

They always leave but never leave and when they arrive they are always full but they always leave and they still don't leave, they are always full

INTO JAPANESE

彼らはいつも去るが、決して去らないし、彼らが到着したとき、彼らはいつもいっぱいですが、彼らはいつも去り、彼らはまだ去らない、彼らはいつもいっぱいです

BACK INTO ENGLISH

They always leave but never leave and when they arrive they are always full but they always leave and they still don't leave, they are always full