YOU SAID:

this is a test!<script>alert('123')</script>

INTO JAPANESE

これはテストです！ <script>alert('123')</script>

BACK INTO ENGLISH

This is a test! <script>alert('123')</script>

INTO JAPANESE

これはテストです！ <script>alert('123')</script>

BACK INTO ENGLISH

This is a test! <script>alert('123')</script>