代号: code name...
师长: military division level commander, teacher...
收看: to watch (a TV program)...
延伸: to extend, to spread...
交付: to hand over, to deliver...
激起: to arouse, to evoke, to cause, to stir up...
脑子: brains, mind...
爽: bright, clear, crisp, open, frank, straightforward, to feel well, fine, pleasurable, invigorating, to deviate...
街道: street, subdistrict, residential district...
短处: shortcoming, defect, fault, one's weak points...
