是不可数名词。其中文意思是 线细线，线状物思路，贯穿的主线例如：
1.The blue fabric was interwoven with red and gold thread.蓝布中交织着红色和金色的线。
2.Bind the ends of the cord together with thread.用线把这根绳子的两端捆扎起来。
3.It took me a long time to thread my way through the crowd.我花了很长时间才从人群中挤过去。
