例句與造句

1. The fifth part introduces the key technique of the whole system : four - layer switch , load balance and ssl security and acceleration
   第五章介紹了在整個(gè)系統(tǒng)設(shè)計(jì)中采用的關(guān)鍵技術(shù)，主要包括：四層交換、服務(wù)器負(fù)載均衡和ssl安全及加速。
2. It's difficult to find four-layer switch in a sentence. 用four-layer switch造句挺難的