Arabic term (edited): To top it off,

بالإضافة إلى ذلك / علاوة على ذلك

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Note added at 2 mins (2019-11-18 11:45:09 GMT)
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https://www.arabdict.com/de/english-arabic/To top it off

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Note added at 4 mins (2019-11-18 11:47:14 GMT)
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To top it off, round-trip airfare is included in overall sabbatical benefits if an employee travels to a foreign country to learn a different language
وعلاوة على ذلك ، تدرج تذاكر السفر بالطائرة ذهابا وإيابا من ضمن الاستحقاقات الإجمالية للإجازة إذا سافر الموظف إلى بلد أجنبي لتعلم لغة مختلفة.


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Note added at 18 mins (2019-11-18 12:01:16 GMT)
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(idiomatic) To emphasize or underscore; to make something even better or worse.
The boss fired Fred and, to top it all off, he asked security to escort him to the door.
https://en.wiktionary.org/wiki/top_it_off

to add something else unusually good or bad to a situation that is already unusual:
Topping it all off, they found themselves locked out of their own house.
https://dictionary.cambridge.org/dictionary/english/to-top-i...

top-it-off
Verb
(third-person singular simple present tops it off, present participle topping it off, simple past and past participle topped it off)

(idiomatic) To emphasize or underscore; to make something even better or worse.
The boss fired Fred and, to top it all off, he asked security to escort him to the door.
https://www.yourdictionary.com/top-it-off