词汇	retention clause
释义	retention clause 保留条款
随便看	surface scratches surface scratching surface scratching hardness surface scratching test surface scratch marks surface screening field Surface Screen Unit surface scuffing surface sealed system surface sealer surface sealing surface sealing method surface search surface-search surface search coordinator surface search coordinator, CSS surface searching and early warning surface search radar surface search radars surface seawater Surface seawaters surface sediment Surface sediment of lake surface sediments surface sediments and soils