Knuckle 指关节
A knuckle is the bony part in your finger where two bones meet and make a joint.
Each finger has three knuckles, but the thumb has only two.
The knuckle is easy to spot when you make a fist because it sticks out under the skin.
Knuckles let your fingers bend, straighten, and grip things like a pencil or a cup.
The skin over a knuckle is often thicker, since it bends and moves a lot every day.
If you bump your hand, the knuckle might become red or swollen for a short time.
指关节是手指中两块骨头相接形成的关节处突起。
每根手指都有三个指关节，拇指则有两个。
当你握拳时，指关节会在皮肤下鼓起，非常明显。
指关节使手指可以弯曲、伸直，也能抓握铅笔或杯子。
由于经常活动，指关节覆盖的皮肤常常更厚。
如果不小心撞到手，指关节有时会暂时发红或肿胀。
配套练习✍️ knuckle /ˈnʌkəl/
🔍 完形填空（Cloze Test）
-
A knuckle is where two finger bones ______.
（a. break / b. meet / c. hide） -
The thumb has ______ knuckles instead of three.
（a. five / b. two / c. four） -
When you make a fist, your knuckles ______ under the skin.
（a. disappear / b. stick out / c. turn blue） -
Knuckles help fingers bend and ______.
（a. sing / b. straighten / c. glow） -
The skin over a knuckle is usually ______ than other skin on the finger.
（a. thinner / b. softer / c. thicker）
✅ 选择题（Multiple Choice）
-
Which part of your finger lets you hold objects firmly?
A) Knuckle
B) Nail
C) Cuticle -
What happens to a knuckle after you bump your hand?
A) It always breaks
B) It may turn red or swell
C) It disappears -
Which finger has only two knuckles?
A) Ring finger
B) Little finger
C) Thumb
📝 填空题（Fill in the Blanks）
-
Each hand has fingers with three ______, except for the thumb.
（可选答案：knuckles, lines, bones） -
Knuckles are joints that help you ______ your fingers.
（可选答案：bend, stretch, color） -
The skin above a knuckle may become ______ if you use your hands a lot.
（可选答案：thicker, lighter, colder） -
Knuckles let fingers move so you can ______ things.
（可选答案：grip, hear, see）
练习答案✅
完形填空
- b. meet
- b. two
- b. stick out
- b. straighten
- c. thicker
选择题
6. A) Knuckle
7. B) It may turn red or swell
8. C) Thumb
填空题
9. knuckles
10. bend
11. thicker
12. grip
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