http://down.cenet.org.cn/upfile/33/200544124915167.pdf

2256. 双杠 parallel bars
2257. 双刃剑 double-edged sword
2258. " 双向选 择 ""two-way selection, referring to employer and
employee choosing each other in a job market”
2259. 双向选择 two-way choice (in employment practice)
2260. 双学士制 a double BA degree system
2261. 双赢 double win
2262. 双赢局面 win-win situation
2263. 双职工 man and wife both at work; working couple
2264. 双重遏制政策 dual containment policy
2265. 双重轨制 two-tier system ; double-track system