You can think of a tube: a hollow ring of rubber, plastic or metal with a hole running through the middle. Everything the word does comes from that ring — sometimes from what can travel through the hole, sometimes from the fact that a person can sit in it.
From the word’s history
Wiktionary records tubing as tube + -ing.
Wiktionary 記的就是 tube 加 -ing。-ing 在英文裡可以做兩件事：一是把東西變成材料的總稱，像 piping、wiring；二是把動作變成一項活動，像 camping、cycling。tubing 兩種都用上了，這正好對應到它的兩族意思。
Wiktionary entry for tubing (kaikki snapshot 3f6f69a190036ae4): 'From tube + -ing.'
登入就可以看每一支怎麼連回核心畫面。
原始詞典資料5 筆記錄
以下是外部詞典記錄的用法，摘錄並精簡格式，我們還沒有寫成教學內容。上面的說明才是我們自己寫的；有些用法可能上面已經講過了。
tubingnoun
- 1
Tubes, considered as a group.
- 2
A length of tube, or a system of tubes.
- 3
Riding down a river on an inner tube recreationally.
- Enticed by boozy tubing experiences, throngs of twentysomething backpackers cemented its spot on south-east Asia’s famed backpacker trail.
- 4
Tobogganing down a snowy slope or toboggan run on an inner tube.
這個拼法也被記錄為下列字的變化形：
摘錄自 英文維基詞典 English Wiktionary，已精簡格式；依 CC BY-SA 4.0 授權使用，改動後的內容同樣以此授權提供。