词汇	core thought
释义	core thought 总体思路
随便看	train tonnage rating train-top key train to shovel ratio train-to-train communication train tourist train tourist guides train-to-wayside frequence train-to-wayside radio train track traintrack gene Train tracking Train Tracking and Positioning System train tracks train-track system vibration train traction calculation train tractor Train traffic control train traffic simulator train/trailer ferry train transfer function train travelling at 361 kilometers an hour train travels train troops traint stress train-tube