1、A safety pin has a cover over its point
安全）別針的頂上有一個蓋兒。

2、The teen used a safety pin to help him escape.
少年借用一枚安全別針逃跑出來。

3、Even the humble safety pin can be turned into a stylish statement.
連不起眼的別針也能成為時髦的表征。

4、Safety Pin Shorn Cause Analysis of JRG-3.2X2 Metering Pump
JRG-3.2×2計(jì)量泵在使用中剪斷保險(xiǎn)銷的原因分析