prima facie
/ˌpraɪməˈfeɪʃi:; ˌpraɪmə`feʃɪ/ adj[attrib 作定语], adv (esp law 尤用於法律) based on what seems to be so without further or deeper investigation 似乎如此（的）; 未作进一步或深入调查（的）
prima facie evidence, ie sufficient to establish sth legally (unless it is disproved later) 初步证据
Prima facie he would appear to be guilty. 初步证据表明他有罪.