Developing El Niño becomes strongest on record weeks before expected peak 厄尔尼诺持续发展，在预计达到峰值前数周已创下有记录以来最强水平
Is social media still 'social'? 社交媒体还 “社交” 吗？
Try one's patience 考验某人的耐心
辨析四个描述 “行程安排” 的单词：“itinerary”、“schedule”、“plan” 和 “timetable”
How deep into the Earth have we gone? 人类抵达过地球内部多深的地方？
一词一讲：roll
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