(pos:名詞)<explanation>yue:感染#病毒 後但仲未檢驗到嘅階段;要等到#抗體 出現先檢驗到(量詞:段)eng:window period<eg>yue:愛滋病毒嘅空窗期最長係三個月。 (oi3 zi1 beng6 duk6 ge3 hung1 coeng1 kei4 zeoi3 coeng4 hai6 saam1 go3 jyut6.)eng:The window period of HIV lasts at most three months.