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- 二two
- 层layer
- 二层楼(British) first floor; (American) second floor
- 二层舱煤舱tween deck bunker
- 二层舱吨位tween deck tonnage
- 牛二层cattle split leather
- 二层革splitting leather
- 二层炉two floor kiln
- 二层舱between decks
- 二层网2 Lever network
- 二层VPNL2 VPN
- 二层法two-layer process
- 二层皮underlayer oxhide
- 抹二层灰two coat work
- 二层规划bilevel programming
- 二层乔林two-storey high forest
- 二层抽样two-stage sampling
- 二层矿物two layer mineral
- 二层抹灰renderset
- 二层胚盘bilaminar blastoderm