YOU SAID:

humans got along plenty fine without plastic for quite some time

INTO JAPANESE

人類はかなり長い間プラスチックなしでうまくやっていた

BACK INTO ENGLISH

Humanity has been doing well without plastic for quite some time.

INTO JAPANESE

人類はかなり長い間、プラスチックなしでうまくやってこられました。

BACK INTO ENGLISH

Humanity has managed to get by without plastic for quite some time.

INTO JAPANESE

人類はかなり長い間、プラスチックなしでなんとかやってこれてきました。

BACK INTO ENGLISH

Humanity has managed to do without plastic for quite some time.

INTO JAPANESE

人類はかなり長い間プラスチックを使わずに生きてきました。

BACK INTO ENGLISH

Humanity has been able to live without plastic for quite some time.

INTO JAPANESE

人類はかなり長い間、プラスチックなしで生活することができました。

BACK INTO ENGLISH

Humanity has been able to live without plastic for quite some time.