HB的全称是Heavy Barrel，意思为厚膛壁身管。
CD全称是Compact Disc，意思为光盘，激光唱片。
BBC的全称是British Broadcasting Corporation，意思为英国广播公司。
双语例句：
Why is the US, which is currenly engaged in not one but two unpopular wars on foreign soil, still more popular internationally than China according to a BBC World Service poll from April of this year?
那为什么根据BBC今年四月的一个调查，一个现在正在进行不止一场，而是两场在外国土地上不受欢迎的战争的美国，在国际上依然比中国更受欢迎。
Just boot into the Live CD and follow through our guide to recover some files.
仅仅是从激活光盘引导并且按照我们的指导书来恢复某些文件。
Our code is in the solutions folder on the CD included with this book.
我们的代码在本书所附带光盘中的解决方案文件夹中。
After more flight testing with the sun powering HB-SIA, the Solar Impulse team hopes to perform night testing later this year.
HB-SIA完成多次的太阳能飞行测试之后，阳光推动团队希望今年晚些时候进行夜间飞行测试。
But nothing like HB-SIA, as the Swiss aircraft is known, has ever taken to the air.
但是从来没有像这架叫做HB-SIA的瑞士飞机那样子飞行过。