Definition

1. Noun:
   • A navigable channel or waterway, specifically a relatively narrow and often naturally formed passage in a river, harbor, or coastal area that is deep enough for boats or ships to pass through.
   • Refers to the course or path of a water flow that is used for navigation.

Usage Examples

• Noun:
  • Tàu bè phải đi đúng luồng lạch để tránh mắc cạn. (Vessels must follow the correct channel to avoid running aground.)
  • Luồng lạch vào cảng này rất phức tạp và cần hoa tiêu dẫn đường. (The channel into this port is very complex and requires a pilot to guide the way.)
  • Ngư dân địa phương hiểu rõ các luồng lạch trên sông. (Local fishermen understand the waterways in the river well.)

Advanced Usage

• The term is often used in maritime, hydrological, and geographical contexts to discuss navigation, dredging, or environmental studies of water bodies.
• It can imply a route that is known, mapped, or traditionally used for safe passage, contrasting with shallow or obstructed areas.

Variants and Related Words

• Luồng (n): Often used alone to mean a channel, current, or flow (of water, air, traffic, or ideas).

  • luồng nước (water current)
  • luồng giao thông (traffic flow)

• Lạch (n): Typically refers to a small stream, creek, or a narrow inlet, often tidal.

  • con lạch nhỏ (a small creek)

Synonyms

• Channel: A length of water wider than a strait, joining two larger areas of water, especially two seas.
• Waterway: A river, canal, or other route for travel by water.
• Fairway: The navigable part of a river, bay, or harbor.
• Passage: A narrow channel allowing watercraft to pass.

Related Idioms and Phrases

• Khai thông luồng lạch: To dredge or clear a channel.

  • Chính quyền đang có kế hoạch khai thông luồng lạch cho tàu lớn. (The authorities are planning to dredge the channel for larger ships.)

• Nắm vững luồng lạch: To have a thorough grasp of the channels (literally); figuratively, to understand the intricacies or the "ropes" of a situation.

  • Muốn kinh doanh ở đây, bạn phải nắm vững luồng lạch. (To do business here, you must understand the lay of the land.)

1. Narrow passage (of rivers, harbours)