点击下方单词,选择对的这个单词
1. 螺旋形;螺旋体A helix is a spiral shape or form.
1. a structure consisting of something wound in a continuous series of loops
e.g. a coil of rope
Synonym: coilspiralvolutewhorl
2. a curve that lies on the surface of a cylinder or cone and cuts the element at a constant angle
Synonym: spiral
多通过句子记忆单词,而不是单独死记硬背。