I watched the ties and the rails for any tripwires or signs of explosive but i saw nothing . 我细心察看枕木和铁轨，看有没有什么暗线或是炸药的征像，但是看不见。
2.
Conduit systems - part 1 : general requirements 暗线装置系统.第1部分:一般要求
3.
A stereo system . in - wall 安装立体声音响，在墙内布暗线
4.
Schlieren optical system 暗线照像光学系统
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Conduit systems for cable management - part 21 : particular requirements - rigid conduit systems 电缆管理用暗线装置系统.第21部分:特殊要求.硬质暗线装置系统
6.
Conduit systems for cable management - part 22 : particular requirements - pliable conduit systems 电缆管理用暗线装置系统.第22部分:特殊要求.柔性暗线装置系统
7.
Conduit systems for cable management - part 23 : particular requirements - flexible conduit systems 电缆管理用暗线装置系统.第23部分:特殊要求.挠性暗线装置系统
8.
As time passed away , from the reform movement of 1898 to exile in japan , then drew his political career to close after traveled in europe , liang qichao ' s view of chinese education kept on altering 此外另有一条时间暗线贯穿其中，从戊戌变法到流亡日本，再到欧洲游历后退出政坛，随着时间的推移，梁启超关于语文教育的观念也在发生着变更。
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Seeing from full text , the artic le establishes in two main lines . one is a clear line , including the concept , character , research and usage of the enterprise core competencies , among them put forth effort to emphasize the competition strategy and study mechanism , which largely contribute to establish and support to the core competence . the other is a dark line , which established on the national and local economic environment , competing situation and enterprise present condition ‘竟争力特征、研究及使用和强化的方法为引，其中着力强调了竞争战略和学习机制对企业建立、维护和发展核心竞争力的巨大推动作用;另外一条是暗线，以国际、国内的经济环境、竞争局势、企业现状贯穿始终，突出了全球化和知识化对我国企业加强、加速形成具有自身特色核心竞争力所发出的挑战。
