spiral helicine

• 螺旋状的

spiral helicine的用法和样例：

例句

1. A spiral exterior staircase extends up the tower to the platform where the "muezzin" called the people to prayer.
   有一座螺旋状的外部阶梯从塔上延伸到一个平台，这是宣礼员通告人们进行祷告的地方。
2. In the past, the spiral tips of conch shells were often used as aids for the hearing impaired.
   过去，海螺贝壳螺旋状的尖端常被用作听障人士的助听器。