您要查找的是不是：
- 中国笔石科Sinograptidae
- 中国海笔螺属(腹足纲,新腹足目,笔螺科)记述REPORT OF THE GENUS MITRA (MOLLUSCA, NEOGASTROPODA, MITRIDAE) WITH SEVEN NEW RECORD SPECIES FROM THE CHINESE SEAS
- 中国笔石属Sinograptus
- 我想交一个中国笔友I want a Chinese pen pal.
- 我真的想交一个中国笔友。I really want a Chinese pen pal.
- 螺snail
- 笔pencil
- 螺杆screw
- 中国结Chinese knot
- 螺柱double-screw bolt
- 一笔trait
- 中国电信China Telecom
- 螺孔screw
- 中国话Chinese
- 中国农业银行Agricultural Bank of China
- 笔型pen type
- 螺塞plug screw
- 笔友pen pal
- 我是中国人I'm from China.
- 螺杆泵screw pump
