Fixing the safetycord: this particular type of cord (to be bought only from specialized dealers) must hold 5 kg. It prevents an accidental opening of your parachute.
固定安全绳：这种特殊类型的绳子(只能从专业经销商那购买)必须能够承受5 kg的重量。
2
Between eight and ten patients with severe spinal-cord injuries will be recruited to test this treatment for safety.
为了安全，有8 - 10个严重脊髓损伤的患者将纳入治疗试验。
3
The HMLS polyester cord could be used to improve the tire safety and reduce the tire weight because its better dimensional stability.