My buddy Herbie Homes and I rigged up a battery and two key sets and practiced sending messages.
我和好友贺比·侯姆斯倒腾出一个电池和两套按键开始练习发报。
As described previously, the OCCS is composed of four key sets of services with associated products.
如前所述，OCCS是由四组带有关联产品的关键服务构成的。
As described previously, the OCCS is composed of four key sets of services with associated products.
如前所述，OCCS是由四组带有关联产品的关键服务构成的。
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