Q: a plum job とはどういう意味ですか?
A: 高收入轻松工作
Q: you plum とはどういう意味ですか?
A: you plum is an example of a British “affectionate insults” involving a fruit. “You plum” means you idiot/fool. It’s very informal so only use it friends or even family that’s playful. Don’t say it to your boss for example or someone who’s sensitive.
Q: He is very lucky to have got himself a plum job. とはどういう意味ですか?
A: either it's a job in the plum industry, or more likely a quashie job.


Q: plums と prunes はどう違いますか?
A: Plums are fresh raw fruit

Prunes have been dried


Q: plums は 英語 (アメリカ) で何と言いますか?
A: QAの全文をご確認ください
Q: plum は 英語 (イギリス) で何と言いますか?
A: QAの全文をご確認ください
Q: I bought some delicious plums. は 英語 (アメリカ) で何と言いますか?
A: QAの全文をご確認ください
Q: plum は 英語 (イギリス) で何と言いますか?
A: QAの全文をご確認ください


Q: Which one is better, plum wine on the rocks, with water or with sparkling water? この表現は自然ですか?
A: Sounds good! I would just take out the extra "with" and change it to "Which one is better, plum wine on the rocks with water or sparkling water?"
Q: Plum trees bloom earlier than cherry trees. I guess some plum trees are starting to bloom. この表現は自然ですか?
A: quantifier- is basically a reason. Something that gives a statement a particular point.
The problem with your original question was/is, if you're talking to someone who is not familiar with plum and cherry trees, then saying one blooms earlier is O.K. but, The one you are talking too, will not know how much earlier, and I think, be confused, unless they can see the blossoms you're talking about. If I said, "Apple trees produce fruit before pumpkins. I guess some apples are ready for picking. " - does it make sense to you ? do you see my point ( and the similarities ) ? I hope this doesn't sound 'mean' I was trying to help.
Q: When I drink plum juice, I'll be able to get power to start against summer heat.
I want to say 梅ジュースを飲むと、夏の暑さに負けない強さが出る。 この表現は自然ですか?
A: Plum juice gives me the strength to withstand the heat.が自然な言い方だと思います。
Q: I prepared plum juice. I use Japanese plum and cane sugar to make that. I will get the juice ten days later.

Could you correct my sentences?
A: The plum juice I've prepared is made out of Japanese plums and sugar cane powder, processing it takes 10 days.
Q: The plum blossom reminded me that it's been a year since I went to the park last time. この表現は自然ですか?
A: Just a tiny change: "The plum blossom(s) reminded me that it's been a year since I last went to the park."