The Orion（语境补充词）/ɔˈraɪən/ Rover（漂泊者、流浪者）/'rәuvә/ reached a milestone（里程碑、里程石）/'mailstәun/ under the limelight（在聚光灯下）/ˈəndər ðə ˈlaɪmˌlaɪt/: an eminent（显赫的、杰出的）/'eminәnt/ engineer would unveil it before a packed hall（在坐满观众的大厅前）/ˌbiˈfɔr ə pækt hɔl/. Its versatile（多才多艺的、万用的）/'vә:sәtail/ arm could retrieve（取回、挽回）/ri'tri:v/ objects, sprinkle（洒、撒）/'spriŋkl/ water, and submerge（使浸水、使陷入）/sәb'mә:dʒ/ a sensor（检测器）/'sensә/. A lofty（高的、傲慢的）/'lɒfti/ screen showed a galaxy（银河、星系）/'gælәksi/ while glitter（灿烂、闪烁）/'glitә/ fell（一季所伐的木材、折缝）/fel/ around the stage. Then a red glare（闪耀光、刺眼）/glєә/ appeared, foam（泡沫、水沫）/fәum/ leaked from a vent, and the casing began to vibrate（振动、颤动）/'vaibreit/. Hardware chief Mara feared that the public triumph might culminate（到绝顶、达于极点）/'kʌlmineit/ in a formidable（巨大的、优秀的）/'fɒ:midәbl/ electrical failure.

Designer Finn called the event an alien（外国人、外侨）/'eiljәn/ condition caused by hot lights. Tester Ivy disagreed. The device had been prone to heat（容易受热）/proʊn tɪ hit/ in a previous trial, and its predecessor（前任、先辈）/.predi'sesә/ had suffered an oxide（氧化物）/'ɒksaid/ buildup（发展、集结）/'bildʌp/. A reckless（不注意的、粗心大意的）/'reklis/ decision to augment（增加、增长）/ɒ:g'ment/ motor velocity（速度）/vi'lɒsәti/ could ignite（点燃、使灼热）/ig'nait/ insulation（绝缘、隔离）/.insju'leiʃәn. 'insә-/. Ivy crouched（蹲伏、蜷缩）/'krautʃ/ beside the standby（可依靠的人、被喜爱的食品）/'stændbai/ unit, used a probe to retrieve its log, and saw power exceed the safe watt limit（超过安全瓦数限制）/ɪkˈsid ðə seɪf wɑt ˈlɪmət/. The evidence was appalling enough to hamper（食篮、阻碍物）/'hæpә/ any quick restart（重新开始、重新启动）/.ri:'stɑ:t/.

Finn said, “We can downgrade speed（降低速度等级）/ˈdaʊnˈgreɪd spid/ and continue with an impromptu demonstration（继续临时演示）/kənˈtɪnju wɪθ ən ˌɪmˈprɑmptu ˌdɛmənˈstreɪʃən/.” Ivy replied, “That would be reckless while the casing is hot enough to appal（使惊骇、使吓坏）/ә'pɒ:l/ the safety squad（班、小队）/skwɒd/.” Mara asked, “Can either of you guarantee that no further fault will ensue（跟着发生、继起）/en'su:/?” Finn answered, “No; our zeal（热心、热衷）/zi:l/ cannot replace evidence, so I support stopping the show（支持停止演出）/səˈpɔrt ˈstɑpɪŋ ðə ʃoʊ/.”

Mara ejected（逐放、放逐）/i'dʒekt/ the battery and placed the rover behind a barrier（在隔离栏后）/bɪˈhaɪnd ə ˈbɛriər/ near the exit, not the cemetery-like（语境补充词）/cemetery-like/ storage room staff jokingly（开玩笑地、打趣地）/'dʒәukiŋli/ called the graveyard（墓地）/'greivjɑ:d/. She asked spectators not to snatch（抢夺、攫取）/snætʃ/ loose parts or peddle（挑卖、沿街叫卖）/'pedl/ video rumors. A technician（技师）/tek'niʃәn/ wiped olive（橄榄、橄榄树）/'ɒliv/ oil from a worn（用旧的、穿旧的）/wɒ:n/ seal and found a shabby（衣衫褴褛的、低劣的）/'ʃæbi/ cable beneath it. The motor had begun（语境补充词）/ˈbeɪgən/ to batter（面糊（食物）、击球员）/'bætә/ that cable whenever the arm moved through a tight arc（弧、弧形）/ɑ:k/. Even a dwarf（矮子、侏儒）/dwɒ:f/ test model showed the same disposition（性情、处置）/.dispә'ziʃәn/.

The company cancelled the lottery（奖券、彩票）/'lɒtәri/ for a rover ride and offered spaghetti vouchers instead（改为提供意面券）/ˈɔfərd spəˈgɛti ˈvaʊʧərz ˌɪnˈstɛd/. A cardinal（红衣主教、鲜红色）/'kɑ:dinәl/ warning light continued to beckon（招手示意、召唤）/'bekәn/ staff, and a loose lash（鞭子、鞭打）/læʃ/ perplexed（使困惑、使复杂化）/pә'pleks/ the engineer nearest the device. Its proximate（最近的、将临的）/'prɒksimeit/ battery bay also required inspection. The safety note addressed suicide（自杀、自杀者）/'sjuisaid/ risk responsibly（语境补充词）/rɪˈspɑnsəbli/ rather than using the word for a dramatic mechanical（机械的、机械性的）/mi'kænikәl/ failure. Some visitors blushed（脸红）/blʌʃ/; others dozed（瞌睡）/dәuz/ while staff explained the delay. Mara announced a voluntary recall, despite pressure to preserve morale（士气、道德）/mɒ'rɑ:l/. Ivy used a probe and saw power exceed the safe watt limit. The motor began to batter the cable whenever the arm moved through a tight arc. The team would redesign（重新设计）/,ri:di'zain/ that arc, reduce velocity, and test every unit. Their decision lacked glitter, but it prevented a wretched outcome（避免悲惨结果）/prɪˈvɛnɪd ə ˈrɛʧɪd ˈaʊtˌkəm/. A prototype earns trust not by appearing fearless（大胆的、勇敢的）/'fiәlis/, but by making risk visible. This versatile machine would return only after disciplined testing.