The 1960s and early 1970s were a time of change and turbulence.
20 世纪整个 60 年代和 70 年代初期是风云变幻、动荡不安的一个时期。
…a region often beset by political turbulence.
经常遭受政治动乱的一个地区
His plane encountered severe turbulence and winds of nearly two-hundred miles an hour.
他的飞机遭遇强气流和时速近 200 英里的强风。
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