A jointed thing has joints — the little places where two parts meet — and it can bend or move there on purpose.

A jointed thing一個jointed的東西 has joints有關節 the little places where two parts meet也就是兩個部分接合的小地方 and it can bend or move there on purpose而且可以在那裡故意彎曲或活動

A jointed doll can sit and wave because the arms and legs are made to fold at the shoulder, elbow, hip, and knee, the way a body does. Insects have jointed legs. Some pipes, folding rulers, and robot arms are jointed too. We use the word about bodies, toys, tools, and machines when that bending is built in, not when something has merely been stuck together.

A jointed doll一個jointed的娃娃 can sit and wave可以坐下、揮手 because the arms and legs are made to fold因為手腳做成可以折疊的 at the shoulder, elbow, hip, and knee在肩膀、手肘、髖部，和膝蓋 the way a body does就跟身體一樣 Insects have jointed legs昆蟲有jointed的腳 Some pipes, folding rulers, and robot arms某些水管、折疊尺，和機器手臂 are jointed too也是jointed的 We use the word我們用這個詞 about bodies, toys, tools, and machines形容身體、玩具、工具，和機器 when that bending is built in當那種彎折是內建的 not when something has merely been stuck together而不是東西只是被黏在一起而已

Though actually, jointed is easy to mix with joined. Joined only means “put together.” Two tables pushed into one are joined; they are not jointed unless they fold at a hinge.

Though actually不過其實 jointed is easy to mix with joinedjointed很容易跟joined搞混 Joined only means "put together."joined只是「接在一起」的意思 Two tables pushed into one兩張桌子併成一張 are joined是joined they are not jointed但不算jointed unless they fold at a hinge除非它們能在鉸鏈處折疊

The same spelling is also the -ed form of the verb joint, a kitchen or workshop word: you can joint a chicken (cut it at the joints) or joint two pieces of wood (fit them at a joint). That is a different job.

The same spelling同樣的拼法 is also the -ed form of the verb joint也是動詞joint的過去式／過去分詞 a kitchen or workshop word一個廚房或工作坊會用的詞 you can joint a chicken你可以joint一隻雞 (cut it at the joints)（在關節處把它切開） or joint two pieces of wood或是joint兩塊木頭 (fit them at a joint)（在接合處把它們拼起來） That is a different job那是不同的用法

The picture learners need first is the adjective: made with joints, so it can bend.

The picture learners need first學習者最先要抓住的畫面 is the adjective是形容詞的用法 made with joints做成有關節的 so it can bend所以可以彎