twostepadj.二阶(二阶段；分二期的)twonum.二；两个two-wave coupling两波耦合Two types of social两型社会twoway relationship双边关系Two different atoms非等同两原子two-hand needling双手行针two stage oxidation两段氧化two-way stop sign双向停车标志two circuit feeding双电路馈电two-step approach两步助跑two-hybrid method双杂种方法

1. The two worlds are markedly different.
   两个世界判然不同。
2. This is a mousing surface that offers the best of both worlds.
   这是一捕鼠提供两个世界之中最好的表面。