Richards was 18 at the time of her disappearance. 理查兹失踪时18岁。
mysterious disappearances of radioactive materials 放射性材料的神秘失踪
the disappearance of several rare species 几种稀有物种的灭绝
species that are in danger of extinction 濒临灭绝的物种
Martha's anger suddenly melted away. 玛莎的怒气突然消了。
It just happened, out of thin air. 这事就这么突然发生了。
The climbers seem to have disappeared into thin air.
👨🏻🏫 Mr. Ng 牛津詞典 📚 – oxford.mister5️⃣.net
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