- preliminary
- 初步: initial; first step; prelimi ...
- 的: 4次方是 The fourth power of 2 i ...
- 预备: prepare; get ready
- 预备的，初步的: preliminary
- 初步的: elemental; elementar elementary; incipient; initial; initiatory; introductive; introductory; preliminary; preparatory; previous; tentative
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