double spiral

• 双螺旋线

double spiral的用法和样例：

例句

1. It provided strong evidence of the structure of D-N-A as a double helix.
   它为脱氧核糖核酸结构呈双螺旋线提供了有力证据。
2. Many of the databases along the double helix were shut down, closed, so that you began to function with very little data.
   许多数据库是顺着双螺旋线停止运行，关闭，让你们开始运行很少的数据。