At the start of a cross-subject（语境补充词）/cross-subject/ challenge, Asha's team received a real case rather than a textbook（教科书）/'tekstbuk/ exercise. The opening evidence connected edge（边缘）/edʒ/, educator（教育家）/'edjukeitә/, effect（影响；效果）/ɪˈfekt/, elderly（过了中年的、稍老的）/'eldәli/, elegant（优雅的、端庄的）/'eligәnt/, elsewhere（在别处）/'elshwєә/, embarrassed（尴尬的、窘迫的）/im'bærәst/, emerge（浮现、形成）/i'mә:dʒ/, emotion（情绪、激动）/i'mәuʃәn/, emperor（皇帝、君主）/'empәrә/, emphasis（强调、加强）/'emfәsis/, encounter（相会、相遇）/in'kauntә/, energetic（精力充沛的、积极的）/.enә'dʒetik/, and energy（能量）/ˈenədʒi/. The links looked unusual, but each detail came from a witness, label, form, or measurement（尺寸、度量）/'meʒәdmәnt/ in the case file. The team has already reviewed the complete plan.

A second folder added engine（引擎、发动机）/'endʒin/, enhance（提高、加强）/in'hæns/, enormous（巨大的、庞大的）/i'nɒ:mәs/, ensure（确保）/ɪnˈʃʊr/, entertainment（娱乐、款待）/.entә'teinmәnt/, entirely（完全、全然）/in'taiәli/, entitle（给...权利、取名为）/in'taitl/, entry（登录、条目）/'entri/, envelope（信封、封套）/'envәlәup/, envy（羡慕、嫉妒）/'envi/, equator（赤道）/i'kweitә/, era（时代、纪元）/'iәrә/, error（错误、过失）/'erә/, and erupt（爆发）/i'rʌpt/. Some entries described people and places; others recorded objects, actions, or changing conditions. The students sorted each clue by time and source instead of forcing an early answer. The final choice was explained to everyone at the meeting.

The hardest set included escape（逃亡、避难设备）/i'skeip/, essay（随笔、短文）/'esei. e'sei/, essential（必要的；本质的）/ɛˈsɛnʃəl/, eve（前夕、前夜）/i:v/, event（活动；事件）/ɪˈvent/, eventually（最终）/ɪˈvɛnʧəwəli/, examine（检查）/ɪɡˈzæmɪnd/, exceptional（例外的、异常的）/ik'sepʃәnәl/, exhibition（表现、展览会）/.eksi'biʃәn/, exist（存在）/ɪgˈzɪst/, exit（出口；退出）/ˈɛksət/, expand（使膨胀、详述）/ik'spænd/, expansion（扩充、开展）/ik'spænʃәn/, and explode（爆炸、爆发）/ik'splәud/. Asha checked spelling and context while a partner marked facts that could be tested. Mina, who led（lead的过去式和过去分词）/led/ the discussion（讨论）/dɪˈskʌʃn/, asked for clear evidence. Then the supervisor（管理者、监督者）/.sju:pә'vaizә/ said, “Do not hide an awkward clue merely because it weakens（削弱、减弱）/'wi:kәn/ your first idea.”

The last working board brought together explore（探险、探测）/ik'splɒ:/, export（输出品、输出）/ik'spɒ:t/, expose（使暴露、使曝光）/ik'spәuz/, exposure（暴露、揭发）/ik'spәuʒә/, extend（延伸；延长）/ɪkˈstɛnd/, extension（延长、扩充）/ik'stenʃәn/, extent（程度；范围）/ɪkˈstɛnt/, extinction（消失、消灭）/ik'stiŋkʃәn/, extra（额外的）/ˈekstrə/, extraordinary（非常的、特别的）/ik'strɒ:dәnәri/, extremely（极端地、非常地）/ik'stri:mli/, fabric（织物、布）/'fæbrik/, failure（失败；故障）/ˈfeɪljər/, and faith（信心、信任）/feiθ/. The group compared the four boards, removed repeated claims, and wrote（写下）/roʊt/ a short reason beside every decision（决定）/dɪˈsɪʒn/. If the first method fails, we can try another one. That rule helped them correct two mistakes without blaming a teammate（队友）/'ti:mmeit/.

They planned to check in（办理登记手续）/ʧɛk ɪn/, check out（办理退房；结账离开）/ʧɛk aʊt/, and set off（出发）/sɛt ɔf/ at safe times. Nobody would go on board（在交通工具上）/ɔn bɔrd/ without checking the notice in advance（提前）/ɪn ədˈvæns/. In case of（万一；如果发生）/ɪn keɪs əv/ trouble, one adult would be responsible for（对……负责）/bi riˈspɑnsəbəl fər/ contact while the student could apply for（申请）/əˈplaɪ fər/ official help. The completed record told（告诉）/toʊld/ a clearer story than the first draft. It did not pretend that every clue was equally important; it showed how disciplined reading, calm cooperation（合作、协力）/kәu.ɒpә'reiʃәn/, and a checkable（语境补充词）/checkable/ decision could turn a crowded case into useful（有用的）/ˈjuːsfəl/ action.