buoyancy
/ˈbɔɪənsi/ (bre, ipa) · [bˈɔɪənsi] /ˈbɔɪənsi/ (ame, ipa) · [bˈɔɪənsi] /ˈbȯi-ən(t)-sē How to pronounce buoyancy (audio) ˈbü-yən(t)-/ (ame, mw)
buoyancy — 名詞
1. the ability of a body or object to stay on the surface of water or another liqui
浮力
物體在液體中上浮的能力
the ability of a body or object to stay on the surface of water or another liquid, or to be pushed upward by it
The rescue jacket's buoyancy kept Christopher above the waves until the boat returned.
這件救生衣的浮力讓 Christopher 在船回來前一直漂浮在浪間。
keep + person above the waves
Divers tested the buoyancy of each foam panel before building the floating dock.
潛水員在搭建浮動碼頭前，先測試每塊泡棉板的浮力。
buoyancy of + object/material
Warm salt water gives swimmers more buoyancy than the cold lake does.
溫暖的鹽水比冰冷的湖水更能給游泳的人浮力。
Tanvi added air to the raft to improve its buoyancy near the rocks.
Tanvi 往橡皮筏裡補氣，好提升它在岩石附近的浮力。
- floatability
technical and much less common in everyday English
- lift
focuses on upward force, especially in science or engineering
文法句型
the buoyancy of + object/material
more buoyancy than + object
improve buoyancy
用法筆記
Usually used as an uncountable noun in discussions of boats, life jackets, materials, and swimming conditions. Distinguish from sense 3, which describes a person's positive spirit rather than floating force.
2. a condition in which prices, demand, or business activity stay strong and financ
暢旺；堅挺
景氣、價格或業務維持強勢
a condition in which prices, demand, or business activity stay strong and financially healthy
Lower fuel costs restored buoyancy to the airline after a difficult spring.
較低的燃料成本，讓這家航空公司的業務在艱難的春季後恢復暢旺。
restore buoyancy to + business
Investors pointed to the market's buoyancy when new shops opened across town.
新商店在全城開張時，投資人都指出市場依然堅挺。
market's buoyancy
Even after the storm, cafe owners saw buoyancy in weekend bookings.
即使風暴過後，咖啡館老闆仍看見週末訂位保持暢旺。
Strong export orders gave the small factory unexpected buoyancy this quarter.
強勁的出口訂單，讓這家小工廠本季出現了出乎意料的暢旺。
- strength
broader and less tied to markets or prices
- resilience
emphasizes recovery after pressure more than strong trading conditions
- vitality
suggests active energy, often in a business or local economy
文法句型
buoyancy in + market/business
restore buoyancy to + business
give + business/market + buoyancy
用法筆記
Most common in business or economic reporting, especially with words like market, prices, sales, demand, and bookings. Distinguish from sense 1, which is literal floating ability, and from sense 3, which is about a person's spirit.
3. cheerful confidence that keeps someone lively and hopeful even when life is diff
朝氣；樂觀
困難中仍保持開朗與希望
cheerful confidence that keeps someone lively and hopeful even when life is difficult
Despite the exam delay, Sayaka spoke with buoyancy about the next attempt.
儘管考試延期，Sayaka 談起下一次再考時還是帶著朝氣。
speak with buoyancy after trouble
Noa's buoyancy lifted the whole kitchen after the power cut spoiled dinner.
停電毀了晚餐後，Noa 的朝氣仍讓整個廚房重新振作起來。
buoyancy lifted the whole room
There was real buoyancy in the class once the missing dog came home.
走失的狗回家後，班上立刻出現了一股真正的樂觀。
After months of treatment, Iris returned with the same buoyancy and quick laugh.
經過數月治療後，Iris 回來時仍帶著同樣的朝氣和爽朗笑聲。
- cheerfulness
focuses on visible happiness more than inner resilience
- optimism
stresses hope about the future more than lively energy
- resilience
emphasizes recovery and toughness more than lightness of spirit
- gloominess
suggests a low, heavy mood instead of light confidence
- discouragement
shows a drop in hope and spirit after problems
文法句型
with buoyancy
buoyancy in + voice/mood
return with buoyancy
用法筆記
Often appears in descriptions of a person's tone, manner, or general mood after difficulty. Distinguish from sense 2, which describes strong commercial conditions rather than emotional energy.