Translation of Hinreise

Today we have what we call 'hair dryer wind' (south wind from over the Alps), and it is around 30 degrees in Aarau. In some places even 31. Many people have headaches because of the weather.
Maybe we would need to say install our dictionary as a software? But I would say instead of install, use our dictionary as a software. So bottom line. If I use the singular form for newsletters and websites, I am on the safe side for both?
I understand your English, it's not bad at all. Yes, the English vocabulary is much larger than the German. The more you might spend time using the language, the better your vocabulary knowledge will become.