Was heißt »Positiv« auf Englisch?

Das Substantiv Positiv lässt sich wie folgt von Deutsch auf Englisch übersetzen:

Deutsch/Englische Beispielübersetzungen

Positive Atomkerne ziehen negative Elektronen an.: Positive atomic nuclei attract negative electrons.
Visualisierung, ein bevorzugtes Mittel des Psychologen, kann nicht alle Probleme lösen, aber viele Anhänger des sogenannten Positiven Denkens scheinen anzunehmen, dass es dies kann.: Visualization, a favorite tool of the psychologist, cannot solve all problems, but many so-called positive thinkers seem to think that it can.

Teachers should create a positive learning environment.
Hundreds of tourists at a hotel in the Spanish resort of Tenerife are being tested after another vacationer, an Italian from Lombardy, tested positive.
Tom Hanks and his wife tested positive for the virus.
Chancellor Angela Merkel is in quarantine after being in contact with a doctor who tested positive for the coronavirus.
Britain's Prince Charles, the heir to the throne, has tested positive for the coronavirus, Buckingham Palace announced Wednesday.
?It was shortly after he got to the hospital that we got a text. He tested positive for COVID,” Armstrong said.
Think positive.
I'm positive Tom can swim.
I'm positive Tom will cry.
I'm positive Tom speaks French.
That last sentence doesn't read well, maybe because of the juxtaposition of a negative and a positive.
Within the past 14 days, have you been in close contact with someone who has tested positive for COVID-19?
Use positive thinking, and stop doubting your own intelligence.
Some athletes tested positive for the coronavirus.
To all those suffering from COVID-19, stay positive.
O positive is the most common blood type.
Tom's blood type is O positive.
Tom tested positive.
Be positive.
Strong-willed kids need clear boundaries and positive role models.