The phrase "a good expression" is correct and usable in written English.
It can be used when referring to a phrase or saying that effectively conveys a thought or sentiment.
Example: "In my opinion, 'time heals all wounds' is a good expression that captures the essence of recovery from emotional pain."
Alternatives: "a fitting phrase" or "an apt saying".
You're right, that's not a good expression — it's offensive to Arabs.
"I just wanted to try to help remind youngsters out there that this is a good expression".
The idea was that the proper design is a good expression of its times.
"I call it 'Neo-Neo-Classicism.' I could keep neo-ing but I think neo-neo- is a good expression of it".
Westerwelle, in a press conference, called what the cables said about him "Klatsch und Tratsch" — a good expression meaning, roughly, gossip and more gossip, with "Klatsch" being the rumor-mongering kind of gossip and "Tratsch" being more like babbling chatter.
"I just know he'd love that we are doing this celebration for him," says Jazz. "It would be totally right up his street and such a good expression of who he was.
"There has already been a very good expression of support, but now we need a firm commitment," Lewis told the MPs in the House of Lords last night.
It was desirable that the expression data of a gene exhibit good expression dynamics in at least one of the datasets.
A third set of proteins resulted in almost undetectable soluble expression with a H10 tag but good expression with H10-Trx or H10-MBP fusions.
Serial dilutions of a liver homogenate with good expression of both PPARα isoforms were run on each gel and used for inter- and intra-membrane calibration.
Immunoblotting of whole cell lysates from the selected clones with an HA antibody, showed good expression of HA-tagged WT PKD2 and HA-tagged R742X PKD2.
