例句與造句

1. Respiratory protective devices for self - rescue - self - contained closed - circuit compressed oxygen breathing apparatus incorporating a hood - requirements , testing , marking
   帶面罩的自救用自帶閉路式壓縮氧氣呼吸器的呼吸防護(hù)
2. It's difficult to find oxygen breathing apparatus in a sentence. 用oxygen breathing apparatus造句挺難的