Was heißt »Redewendung« auf Englisch?

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

Deutsch/Englische Beispielübersetzungen

Seine Rede enthielt viele schöne Redewendungen.: His speech contained many fine phrases.
Das ist eine feststehende Redewendung.: This is a set expression.
Das ist nur eine Redewendung.: That's nothing but a figure of speech.
Dieses Buch ist voller Redewendungen.: This book is full of figures of speech.
Das war nur eine Redewendung.: That was only a figure of speech.
Wer Englisch spricht, ist mit der Redewendung „once in a blue moon“ vertraut, mit der ausgedrückt wird, dass etwas selten geschieht.: English-language speakers are familiar with the phrase “once in a blue moon,” referring to something that happens rarely.
Englisch ist reich an Redewendungen.: English abounds in idioms.
Ich vermute, dass das eine wörtliche Übersetzung einer Redewendung ist.: I think this may be a literal translation of an idiom.

The Greeks invented the comma, not for their literature but for their actors, to warn them to take a deep breath in preparation of an upcoming long phrase; thus a comma represents a pause.
Can you phrase your answer in an understandable manner?
It's not for nothing that mathematicians use the phrase "necessary and sufficient."
Of course this phrase is only used by older people.
The phrase 'honest politician' is an oxymoron.
She explained the literal meaning of the phrase.
"Better dead than red" was a popular phrase during the "Cold War".
Ph.D. is an abbreviation of the Latin phrase - philosophiae doctoratum.
If more than one Esperanto speaker finds the phrase illogical, I will change it.
'can' is an auxiliary verb, so in question sentences it is brought to the start of the phrase.
He explained the literal meaning of the phrase.
Look up the phrase in your dictionary.
Goethe used this idiom. Why, then, should it be incorrect today?
I wonder what this phrase means.
You can omit the preposition in this phrase.
What is the meaning of this phrase?
How is this phrase to be interpreted?
The phrase is meant to insult people.
You know the phrase, we reap what we sow. I have sown the wind and this is my storm.
I do not know how to translate the phrase "pastry cutters for Christmas cookies".