ballast

/ˈbæləst/ (bre, ipa) · /ˈbæləst/ (ame, ipa) · /ˈba-ləst/ (ame, mw)

ballast — 名詞

1. Heavy material like sand, stone, or water that is placed at the bottom of a ship

1.名詞B2
釋義

壓艙物;道碴

船或氣球底部的重物或鐵路底層碎石

Heavy material like sand, stone, or water that is placed at the bottom of a ship or a hot-air balloon to keep it steady and balanced. The term also refers to the layer of small crushed stones that forms the base of a railway track or road.

例句

Hiroshi watched the crew load ballast onto the cargo vessel before its Atlantic crossing.

Hiroshi 看著船員在貨船橫渡大西洋之前將壓艙物裝上船。

load ballast

Workers spread crushed stone ballast evenly along the new railway tracks.

工人將碎石道碴均勻鋪在新的鐵路軌道下。

spread crushed stone ballast

同義詞
  • stabilizer

    a device or substance that keeps something steady, usually more technical in tone

  • counterweight

    a weight used to balance another weight, often in machinery rather than vessels

反義詞
  • buoy

    something that keeps afloat rather than weighing down

用法筆記

This sense is always uncountable. When referring to the stones under railway tracks, British English often uses the uncountable form: 'the railway ballast'.

常見錯誤

The ship carried three ballasts in its hold.
The ship carried ballast in its hold.
💡ballast is uncountable in this sense.
They put ballast under the road for drainage.
They put ballast under the road as a foundation.
💡ballast provides stability, not primarily drainage.

2. Something that provides emotional or mental steadiness, helping a person or grou

2.名詞C1
釋義

精神支柱

讓人保持冷靜穩定的力量

Something that provides emotional or mental steadiness, helping a person or group remain calm and balanced during difficult or uncertain times.

例句

The Watanabe family found ballast in their shared traditions during the crisis.

渡邊一家在危機時期從共同的傳統中找到了精神支柱。

found ballast in

Folami's calm voice served as ballast for the team when the deadline moved up.

Folami 冷靜的聲音在截止日期提前時成了團隊的精神支柱。

served as ballast

同義詞
  • anchor

    something that keeps you grounded and secure, more relational in tone

  • mainstay

    a person or thing that provides the main support, slightly stronger in meaning

  • foundation

    the base on which something is built, less emotional in register

反義詞
  • disruption

    something that causes instability or confusion

用法筆記

Frequently used in figurative or literary contexts. Often paired with verbs like 'provide', 'serve as', 'offer', or 'find'.

常見錯誤

His savings were ballast for his future plans.
His savings provided ballast for his future plans.
💡the subject must provide ballast, not be ballast directly in most usages.

3. A small device in a fluorescent lamp, LED light, or other electric light fixture

3.名詞C1
釋義

安定器

控制燈管電流的電子元件

A small device in a fluorescent lamp, LED light, or other electric light fixture that controls the flow of electrical current to start the light and keep it working properly.

例句

Priya replaced the faulty ballast in the fluorescent light above the kitchen counter.

Priya 更換了廚房流理臺上方日光燈中故障的安定器。

replaced the faulty ballast

The classroom lights flickered constantly because the ballast was starting to fail.

教室的燈不停地閃爍,因為安定器開始故障。

ballast was starting to fail

同義詞
  • starter

    a smaller component that helps start a fluorescent tube, not the same as the full ballast unit

  • control gear

    a technical term covering all current-regulating devices in lighting

用法筆記

Common in technical and maintenance contexts. In everyday speech, 'light starter' or simply 'the light part' are sometimes used instead.

常見錯誤

The ballast in the ceiling fan broke.
The ballast in the ceiling light broke.
💡ballasts are specific to light fixtures, not fans or other appliances.

ballast — 動詞