basal

• 指属于或构成基础的；基本的、根本的，常用于科学语境（如解剖学、生理学、地质学等）表示位于底部或作为起点的。

Relating to or forming a base; fundamental or basic, often used in scientific contexts.

1. Located at the baseC1formalscientific

   Situated at the base of a plant or stem, especially arising directly from the root or rootstock.

   基部的

   • The basal leaves of this plant form a rosette close to the ground.
   • Botanists noted the basal arrangement of the flowers on the stem.
   • The species is characterized by its large, basal leaves.

   同义词basilarbottomlowermostradical

2. Serving as a foundationB2formalscientific

   Forming or serving as a base or foundation for something.

   基础的

   • The basal layer of the skin is crucial for cell regeneration.
   • These principles are basal to the entire theory.
   • The study examined the basal metabolic rate of the participants.

   同义词basebasicfundamentalunderlying

   反义词derivativeperipheralsecondarysubordinatesubsidiarysupplementary

3. Of primary importanceB2formal

   Fundamental or essential; being the most important part of something.

   根本的

   • Trust is a basal requirement for any healthy relationship.
   • The basal needs of the community must be addressed first.
   • Understanding grammar is basal to learning a new language.

   同义词basiccentralessentialfundamentalkeyprimaryunderlyingvital

   反义词incidentalminorperipheralsecondarysubordinate