公文包最外层的口袋里装的有过去两年来的班级花名册；给这些年轻人的信件地址由大学转交，这样能确保他们收到信。
Here in the briefcase's outermost pocket were class rosters from the past two years; letters addressed to those young men care of the university were sure to reach them.
该结构是由混凝土和钢材制成，外层用复合木板包覆，保证其耐久性。
The structure is made of concrete and steel, while the outside layer is clad with composite wood panels that offer guaranteed durability.
导电线芯外面采用耐热聚酯薄膜绝缘带绕包，最外层用橡皮制成的绝缘兼护套做为保护层。
Conductive wire core outside the use of heat-resistant polyester film insulation tape wrapped around, the outermost layer made of rubber insulation and sheath as protective layer.
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