- supposititious
- 偷偷: stealthily; secretly; covert ...
- 掉换: exchange; change; swop; swap
- 的: 4次方是 The fourth power of 2 i ...
- 掉换: exchange; change; swop; swap 掉换工作 be assigned a new job; be transferred to another; 掉换机器零件 replace the parts of the machine
- 偷偷: stealthily; secretly; covertly; on the sly 偷偷地告诉 tell sb. on the quiet; 偷偷地溜走 sneak away; 偷偷地瞧了一眼 steal a glance at
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