late 14c., type of clover, from Anglo-French trifoil (13c.), Old French trefueil "clover, clover-leaf," from Latin trifolium "three-leaved plant," from tri- "three" (see tri-) + folium "leaf" (see folio). As a type of ornamental figure in medieval architecture, early 15c.
实用例句
1. Rumour is already rife here as to Dr. Trefoil's successor.
关于特雷福伊尔博士的继任人,此间已经谣言蜂起.
来自辞典例句
2. They say Dr. Trefoil is very rich.
人家说,特雷福伊尔博士很富裕.
来自辞典例句
3. Single core cable shall be installed in either trefoil or flat formation and secured using cleats.
单芯电缆可以用三叶草法或者平直法植入.并用夹板固定.
来自互联网
4. Trefoil key pendant in sterling silver. 2.25 " long. Chain sold separately. "
纯银三叶草钥匙吊坠. 2.25 英寸长. 可单独出售项链.
来自互联网
5. The point of intersection of arcs or curves , such as the inner points of a trefoil.