leaflet

• 名词，指小而常折叠的印刷纸张，含有信息或广告；也指植物的小叶片或解剖结构中的小瓣状部分。

A noun referring to a small, often folded, printed sheet of paper containing information or advertising, or a small leaf-like part of a plant or anatomical structure.

1. Heart valve partC1formalmedical

   A thin, triangular flap that forms part of a heart valve, helping to regulate blood flow.

   瓣叶

   • The mitral valve has two leaflets that open and close.
   • Damage to a heart leaflet can cause valve leakage.
   • The surgeon repaired the torn leaflet of the aortic valve.

   同义词cuspflap

2. Plant leaf partC1formalscientific

   A single division or segment of a compound leaf.

   小叶

   • The compound leaf of the rose plant has several leaflets.
   • Each leaflet of the clover is a distinct oval shape.
   • Botanists count the number of leaflets to identify the species.

   同义词pinnapinnule

3. Printed materialB1formal

   A small printed booklet or pamphlet, often with a paper cover, used for advertising or information.

   印刷材料

   • The travel agency handed out a leaflet about holiday packages.
   • She picked up a leaflet on healthy eating at the clinic.
   • The leaflet contains instructions for using the new software.

   同义词brochurecircularflyerfolderhandbillhandoutpamphlettract