pulse

Compared meaning: the beating of the heart (noun).

比较义项：心脏的搏动／脉搏（名词）。

• pulse 本词

  Refers to the rhythmic throb of blood in the arteries, usually felt by pressing on the wrist or neck; common in phrases like 'take/check someone's pulse.'

  指按压手腕或颈部所感觉到的动脉搏动，常用于「把脉」「量脉搏」等说法，强调用手指触摸检测。

  The paramedic pressed two fingers to his wrist to check his pulse.

  急救人员把两根手指按在他的手腕上，检查他的脉搏。

• heartbeat

  Refers to a single beat of the heart itself, often heard through a stethoscope or felt against the chest; used in phrases like 'listen to/feel a heartbeat.'

  指心脏本身跳动的一次搏动，常通过听诊器听到或贴近胸口感觉到，用于「听心跳」「感觉心跳」等说法。

  She pressed her ear to his chest and listened to his heartbeat.

  她把耳朵贴在他的胸口，听他的心跳。

Pulse and heartbeat both mean the heart beating, but differ. Pulse is blood felt in arteries, as in 'take a pulse'. Heartbeat is one beat of the heart, heard through a stethoscope. Not compared: pulse's senses 'beans' and 'signal pulse', and heartbeat's 'short moment' sense.

这两个词在此义项上很接近，都指心脏的搏动，但语体和搭配不同：pulse强调用手指触摸到的动脉搏动，常见于「把脉」「测脉搏」；heartbeat强调心脏本身跳动发出的声音或动作，常见于「听心跳」。这里不比较pulse表示「豆类（如豆子、扁豆）」或「（光、声、电等的）脉冲信号」的义项，也不比较heartbeat表示「转瞬之间」的比喻义。

Compared meaning: a brief burst of energy or signal (noun).

比较义项：脉冲，短暂出现的能量或电信号（名词）。

• pulse 本词

  Pulse is the broader term for any brief burst of energy, sound, or electrical current, often one in a repeating series, such as radar or laser pulses.

  pulse 是更宽泛的说法，指任何短暂出现的能量、声音或电流爆发，往往是重复出现的一系列信号中的一个，例如雷达脉冲或激光脉冲。

  The radar sends out a pulse every few seconds to detect nearby aircraft.

  雷达每隔几秒发出一次脉冲信号，用来探测附近的飞机。

• impulse

  Impulse specifically denotes a brief electrical or nerve signal that triggers a response, common in physiology and electronics, and is usually a single, non-repeating event.

  impulse 特指触发某种反应的短暂电信号或神经信号，常用于生理学和电子学领域，通常是单次、不重复出现的事件。

  An electrical impulse travels along the nerve to make the muscle contract.

  一个电脉冲沿着神经传导，使肌肉收缩。

Pulse and impulse both mean a brief burst of energy, but differ. Pulse is broader, often repeating, like radar or laser pulses. Impulse means a brief electrical or nerve signal that triggers a response. Not compared: pulse's 'heartbeat' meaning, and impulse's 'sudden urge' meaning.

这两个词在“脉冲”这一义项上意思相近，都指短暂出现的信号或能量爆发，但 pulse 更常指周期性、可重复出现的脉冲（如脉搏、雷达波），语域更中性；impulse 更强调触发某种反应的单次电信号或神经信号，常见于科学和技术语境。这里不比较 pulse 的“脉搏、心跳”义，也不比较 impulse 的“一时冲动”义。

Compared meaning: to beat strongly and rhythmically (verb).

比较义项：以强烈而规律的节奏跳动、搏动（动词）。

• pulse 本词

  Neutral and clinical; describes a steady, measurable rhythm, often of blood, machinery, or sound, without any sense of pain or intensity.

  语气中性、客观，描述稳定、可测量的节奏，常用于血液、机器或声音，不带疼痛或强烈情绪的意味。

  You could feel the blood pulse through the vein under his skin.

  你能感觉到血液在他皮肤下的血管里跳动。

• throb

  Suggests a strong, often painful or emotionally charged beating, typically of a body part such as the head, a wound, or the heart after strain or injury.

  暗示强烈、常带疼痛或强烈情绪的跳动，通常指头部、伤口或心脏等身体部位在劳累或受伤之后的跳动感。

  Her head began to throb painfully after the long flight.

  长途飞行后，她的头开始阵阵抽痛。

• pulsate

  Describes rhythmic swelling, glowing, or throbbing motion, often of light, music, or a whole place, giving a vivid, almost visual sense of pulsing energy.

  描述有节奏地膨胀、发光或搏动的动态，常用于灯光、音乐或整个场所，给人一种生动、近乎视觉化的搏动能量感。

  Neon lights pulsated across the club floor in time with the bass.

  霓虹灯随着低音的节奏在舞池上有节奏地闪烁跳动。

Pulse, throb, and pulsate mean to beat rhythmically, but differ. Pulse is neutral, like a steady rhythm in blood or machinery. Throb suggests painful beating, like a hurt head. Pulsate describes rhythmic glowing, like light or music. Not compared: pulse's 'heartbeat' and throb's 'pain' senses.

这三个词都表示有节奏地、强烈地跳动或搏动，但语气和常见搭配不同：pulse 中性客观，常用于医学或技术场景；throb 强调因疼痛或强烈情绪而产生的跳动感，带有不适或紧张的意味；pulsate 常描述灯光、声音或氛围有节奏地起伏、闪动，较少用于身体感觉。这里不比较 pulse 作名词表示“脉搏”的用法，也不比较 throb 作名词表示“阵痛、悸动”的用法。