rot, talking rot, outta, one-on-one or on-to-one?

【明報專訊】美國哈佛大學校長德魯福斯特（Drew Faust）在本年開學典禮時給了同學們一些忠告，其中四點值得留意：expect to be wrong，recognise when "someone is talking rot"，don't be silent，engage in debate。

Six members of the Presidential Advisory Council on HIV/AIDS have resigned, outraged at the new administration's regressive health policies and a lack of care shown by President Trump.

In a joint letter published in Newsweek magazine this week they write: "The Trump Administration has no strategy to address the on-going HIV/AIDS epidemic, seeks zero input from experts to formulate HIV policy, and - most concerning - pushes legislation that will harm people living with HIV and halt or reverse important gains made in the fight against this disease."

Trump doesn’t care about HIV. We’re outta here

NEWSWEEK.COM

Bill Gates and John Cena sat down to talk ending polio for good. Check out their conversation on the Today Show.

John Cena goes one-on-one with Bill Gates about anti-polio campaign

Wrestling icon and actor John Cena has joined forces with Microsoft mogul Bill Gates and his wife Melinda Gates for a good cause: Rotary, the global…

TODAY.COM

這一問題我悶了20幾年，今天終於在辭典找到。
1980年代中開始注意到，在美國就「個別諮詢」等，採用 ONE-ON-ONE。
我一直解不開：為什麼不用我直覺的說法：ONE-TO–ONE COACHING 等等….

今天紐約時報 Paid Event for Education Officials Sets One-on-One Sales Meetings
順手查辭典才弄清楚，才知道這是美國和英國的英文使用習慣不同….

rot

decay:

Rot has got into the furniture.

​

old-fashioned informal nonsense:

Don't talk rot!

 informal stop talking rot: 


查 Short O. E. D., "rot" 此義 (nonsense, rubbish, balderdash, gibberish, ...)，從19世紀中期開始使用。該書talk rot 有2例


talking rot,

1. To say foolish things; to talk of nonsense. Don't pay Jonathan any mind, Mary, he's just talking rot again. 2. To exaggerate one's achievements or knowledge of some subject; to bluff or boast.

Talk rot - Idioms by The Free Dictionary

outta

ˈaʊtə/

preposition

1. a non-standard contraction of ‘out of’, used in representing informal speech.

   
   

   "we'd better get outta here"

one-on-one
adverb US
In sports, if something is done one-on-one, it means that each player from one team is matched to a single player from the other team.
See also one-to-one (CONNECTION); one-to-one (TWO PEOPLE).

one-to-one (TWO PEOPLE)
adjective [before noun] (US ALSO one-on-one)
describes an activity in which one person is teaching or giving information to another person:
These children have special educational needs and require one-to-one attention.
---

one-to-one (CONNECTION)
adjective
Something that is in a one-to-one relationship with another thing strongly influences the way that the other thing changes:
Is there a one-to-one relationship between pay levels and productivity?

(from Cambridge Advanced Learner's Dictionary)