Safety pins can be a useful item anywhere you go. Usually the larger ones are more dependable, but a handful of smaller ones are also a good idea.

无论你去哪里，安全别针都是一个有用的物件。通常大号的安全别针用处更大，不过一盒子小号别针也不错。

Remove the safety pins and drawing paper. You will see the outline of your drawing on the T-shirt.

把安全别针和绘图纸移走，你就会看到画的轮廓已经在T恤上了。

Install landing gear ground safety pins, pitot probe covers.

安装起落架地面安全销 、 空速管套.

Chocks inserted , landing gear safety pins inserted, ground power unit on, release brakes, Please.

轮挡已挡好, 起落架安全销已插好, 地面电源接好, 请松刹车.

Little did they know that the man whose clothes were held together by safety pins was a remarkably adroit stock market investor.

大家只知道他是个着装普通、生活节俭的人，却不知道他其实是个股票投资高手。

Foam extinguishers should be used upside down, dry powder, 1211 type and carbon dioxide extinguishers should be used with the safety pins pulled out.

泡沫灭火器要颠倒过来使用，干粉式，1211和鸭嘴式二氧化碳灭火器使用时要先拔掉保险销。