The Orion Rover reached a milestone（里程碑）/'mailstәun/ under the limelight（在聚光灯下）/ˈəndər ðə ˈlaɪmˌlaɪt/: an eminent（著名的）/'eminәnt/ engineer would unveil it before a packed hall（在坐满观众的大厅前）/ˌbiˈfɔr ə pækt hɔl/. Its versatile（多用途的）/'vә:sәtail/ arm could retrieve（取回）/ri'tri:v/ objects, sprinkle（洒）/'spriŋkl/ water, and submerge（使浸水）/sәb'mә:dʒ/ a sensor. A lofty（高的）/'lɒfti/ screen showed a galaxy（星系）/'gælәksi/ while glitter（亮片）/'glitә/ fell around the stage. Then a red glare（强光）/glєә/ appeared, foam（泡沫）/fәum/ leaked from a vent, and the casing began to vibrate（振动）/'vaibreit/. Hardware chief Mara feared that the public triumph might culminate（最终演变为）/'kʌlmineit/ in a formidable（严重的）/'fɒ:midәbl/ electrical failure.

Designer Finn called the event an alien（异常的）/'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（前一代）/.predi'sesә/ had suffered an oxide（氧化物）/'ɒksaid/ buildup. A reckless（鲁莽的）/'reklis/ decision to augment（提高）/ɒ:g'ment/ motor velocity（速度）/vi'lɒsәti/ could ignite（点燃）/ig'nait/ insulation. Ivy crouched（蹲伏）/'krautʃ/ beside the standby（备用的）/'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（妨碍）/'hæpә/ any quick restart.

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）/ә'pɒ:l/ the safety squad（小组）/skwɒd/.” Mara asked, “Can either of you guarantee that no further fault will ensue（跟着发生）/en'su:/?” Finn answered, “No; our zeal（热情）/zi:l/ cannot replace evidence, so I support stopping the show（支持停止演出）/səˈpɔrt ˈstɑpɪŋ ðə ʃoʊ/.”

Mara ejected（弹出）/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（墓地）/'semitәri/-like storage room staff jokingly called the graveyard. She asked spectators not to snatch（抢夺）/snætʃ/ loose parts or peddle（兜售）/'pedl/ video rumors. A technician wiped olive（橄榄）/'ɒliv/ oil from a worn seal and found a shabby（破旧的）/'ʃæbi/ cable beneath it. The motor had begun to batter（反复撞击）/'bætә/ that cable whenever the arm moved through a tight arc（弧）/ɑ:k/. Even a dwarf（矮小的）/dwɒ:f/ test model showed the same disposition（倾向）/.dispә'ziʃәn/.

The company cancelled the lottery（抽奖）/'lɒtәri/ for a rover ride and offered spaghetti vouchers instead（改为提供意面券）/ˈɔfərd spəˈgɛti ˈvaʊʧərz ˌɪnˈstɛd/. A cardinal（深红色的）/'kɑ:dinәl/ warning light continued to beckon（招呼）/'bekәn/ staff, and a loose lash（带子）/læʃ/ perplexed（使困惑）/pә'pleks/ the engineer nearest the device. Its proximate（附近的）/'prɒksimeit/ battery bay also required inspection. The safety note addressed suicide（自杀）/'sjuisaid/ risk responsibly rather than using the word for a dramatic mechanical 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）/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 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, but by making risk visible. This versatile machine would return only after disciplined testing.