gaffe: an unintentional act or remark causing embarrassment to its originator; a blunder.

• White House claims Biden didn't drop classified info in cleaning up gaffe
• in my first few months at work I made some real gaffes

Document shows Chinese oligarchs paid Hunter Biden $100,000, senators allege: (especially in Russia) a very rich business leader with a great deal of political influence.

His late arrival hit off perfectly with our plan: to be in harmony or agreement

She hits it off with her son's girl friend.

postmenopausal /ˌpəʊs(t)mɛnəˈpɔːz(ə)l/:

• post- after
• meno- month; moon
• pausal-stop

senile: /ˈsiːnʌɪl/

femoral neck 股骨颈: Relating to the femur or the thigh.

• femur /ˈfiːmə/
• femoral /ˈfɛ m (ə)r(ə)l/

The lumbar spine(腰椎) is the lower back that begins below the last thoracic vertebra (胸椎T12) and ends at the top of the sacral spine(骶骨), or sacrum (S1)

• lumb-, lumbo-: by extension, the lower back
• lumbar: Relating to the lower part of the back
• thoracic /θəˈrasɪk,θɔːˈrasɪk/: relating to the thorax.
  • thorax /ˈθɔːraks/: the part of the body of a mammal between the neck and the abdomen, including the cavity enclosed by the ribs, breastbone, and dorsal vertebrae, and containing the chief organs of circulation and respiration; the chest.
• vertebra /ˈvəːtɪbrə/

osteo- /ˈɒstɪəʊ/: relating to the bones.

• Osteoporosis has no symptoms：骨质疏松症
  • Osteoporosis /ˌɒstɪəʊpəˈrəʊsɪs/
• osteopenia“/ˌɒstɪəʊˈpiːnɪə/: 骨质减少
  • -penia- (s), -penias (pl), -penic, pen-, penia-: abnormal reduction, decrease in, insufficient, deficiency. Originally, the meaning was poverty, need; sometimes it is erroneously or incorrectly rendered as -poenia
    • calcipenia, chloropenia, cytoglucopenia, cytopenia, eosinopenia, erythroblastopenia
• osteoarthritis /ˌɒstɪəʊɑːˈθrʌɪtɪs/

Bone mineral densitometer (BMD) is a test done to measure a person's bone mineral density

• densitometer /ˌdɛnsɪˈtɒmɪtə/

sketchy

• 1) “the information they had was sketchy”: not thorough or detailed.
  • thorough /ˈθʌrə/
• 2) “once the story does come out, the fact that you tried to hide it will seem sketchy”: dishonest or disreputable.

the flux of ions across the membrane: the action or process of flowing or flowing out.

he was being very laid-back about it all: relaxed and easy-going.

elixir /ɪˈlɪksə,ɪˈlɪksɪə/:

• a magical or medicinal potion: an elixir guaranteed to induce love
  • potion: a liquid with healing, magical, or poisonous properties.
    • “a healing potion”
• a particular type of medicinal solution: a cough elixir

He is a goofy guy: /ɡuːfi/ foolish or harmlessly eccentric

her car stalled at the crossroads: (of a motor vehicle or its engine) stop running, typically because of an overload on the engine.

Your fly is open： your pants zipper is down

she thought he was ripping her off over her royalties: cheat someone, especially financially.

he gets thirty-five grand a year: a thousand dollars or pounds.

a drag: A person, thing, or task that is tedious or boring.

• I don't know who invited this guy to the party. He is a such a drag!
• I know cleaning out the garage is a drag, but it has to be done.

“she's been acting like a spoiled brat all evening”: a child, typically one that is badly behaved.

will Harry Potter finally defeat his nemesis, Voldemort?: a long-standing rival; an arch-enemy.