bound

Compared meaning: certain to happen, as if by fate (adjective).

比较义项：一定会发生、命中注定（形容词）。

• bound 本词

  Bound stresses logical or circumstantial certainty, or a felt obligation, and is the most everyday, plain-spoken of the three; often used with 'to' plus a verb.

  bound 强调由逻辑或情境决定的必然性（或一种应尽的义务），是三者中最口语化、最平实的说法，常与“to + 动词”连用。

  If you keep skipping practice, you're bound to lose the match.

  如果你老是不去训练，你肯定会输掉比赛。

• destined

  Destined implies a person's fate or life purpose was planned in advance, often used about achieving something significant, with a neutral-to-positive tone.

  destined 强调某人的命运或人生使命是预先安排好的，常用于描述取得重大成就，语气中性偏褒义。

  Even as a child, he seemed destined for a career in music.

  即使在孩童时期，他似乎就注定要从事音乐事业。

• fated

  Fated has a more literary, dramatic tone, implying an outcome controlled by an inescapable fate, often tragic or ominous, and is less common in everyday speech.

  fated 语气更文学化、更具戏剧性，强调结局由无法逃脱的命运掌控，常带有悲剧或不祥的意味，日常口语中较少使用。

  According to the old legend, the two lovers were fated never to meet.

  根据古老的传说，这对恋人注定永远无法相见。

Bound, destined, and fated can all mean something is certain to happen. Bound stresses certainty from logic or duty. Destined suggests a life purpose planned by fate, in a formal, positive way. Fated is literary, implying an outcome controlled by an inescapable fate.

这三个词都表示“一定会发生”，但语气不同：bound 强调由逻辑或情境决定的必然性，或表示必须做某事的义务，语气最直接、最口语化；destined 强调仿佛被命运预先安排好的人生使命或结局，语气正式，常用于中性或褒义语境；fated 强调受命运操控、无法逃脱，语气更文学化，常带有悲剧或戏剧性色彩。这里不比较 bound 表示“（被绳索等）绑住”或“开往（某地）”的意思。

Compared meaning: a big jump (noun).

比较义项：跳跃（名词）。

• leap

  Leap denotes one large, dramatic jump and is common in figurative expressions for a sudden, big advance or change, not just physical jumping.

  leap 指一次幅度很大、极具戏剧性的跳跃，也常用于比喻性的表达，表示突然而巨大的变化或进步，而不仅限于身体上的跳跃。

  The invention of the internet was a giant leap in human communication.

  互联网的发明是人类通讯领域的一次巨大飞跃。

• bound 本词

  Bound suggests a light, springy jump, often one of several in quick succession, and typically describes animals or people moving energetically.

  bound 指轻盈而富有弹性的跳跃，往往是连续快速跳跃中的一次，通常用来描述动物或人充满活力地移动。

  The kangaroo crossed the field in three enormous bounds.

  那只袋鼠以三次巨大的跳跃穿过了田野。

Leap and bound can both mean a big jump. Leap means one large, dramatic jump, often used figuratively for a sudden big change. Bound means a light, springy jump, often one of several in a row, typically for an animal or person moving energetically.

这两个词都可以表示“幅度较大的跳跃”，但语气和使用场景有所不同：leap 强调一次决定性的、往往幅度很大的跳跃，也常用于比喻意义，表示突然而巨大的变化或进步；bound 则多指轻盈而富有弹性的跳跃，常用于描述动物或人连续快速地跃过某段距离。这里不比较 bound 表示“受约束的／被迫的”（如 bound by a leash）或“开往……的”（bound for）等其他意义。

Compared meaning: the edge or limit of an area (noun).

比较义项：区域的边界、范围（名词）。

• boundary

  The everyday, concrete word for a line separating two areas, such as a fence, wall, or river between properties or countries.

  日常用词，指分隔两个区域的具体分界线，例如篱笆、墙壁或两国之间的河流。

  The fence marks the boundary between the two properties.

  这道篱笆标出了两块地产之间的边界。

• bound 本词

  A more formal or technical word for the outer limit of an area, usually used in the plural (bounds) or in mathematical contexts; the singular form sounds literary for a literal geographic edge.

  语气更正式或技术性的词，指区域的外部界限，通常用复数形式 bounds，或用于数学语境；单数形式用来指具体的地理边界时带有文学化的语气。

  Beyond that river lies the northern bound of the old kingdom.

  那条河的对岸，就是这座古老王国的北部边界。

Boundary and bound can both mean the edge of an area. Boundary is the everyday word for a line separating two areas. Bound is more formal or technical, usually used in the plural 'bounds'. Bound's verb and adjective uses are not compared here.

这两个词在这个义项上都可以指一个区域的边界，但 boundary 是日常用词，指两个区域之间具体、明确的分界线；bound 语气更正式或技技术性，这个义项下更常用复数形式 bounds，单数 bound 单独指具体地理边界的情况在日常口语中较少见。这里不比较 bound 作动词（表示被捆绑、被束缚，boundary 没有对应词形）或作形容词（表示必然的、准备前往某地的）等其他用法。