**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.

post**menopausal** /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.
  * Osteo**porosis** has no symptoms：骨质疏松症
     * **Osteoporosis** /ˌɒstɪəʊpəˈrəʊsɪs/
  * osteo**penia**"/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
        * calci**penia**, chloro**penia**, 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.