The concurrence of their disappearances had to be more than coincidental.
他们一起消失应该不是巧合。
《柯林斯英汉双解大词典》
2
The most likely reason for departing a board was age, so the researchers concentrated on those "surprise" disappearances by directors under the age of 70.
离开董事会最有可能的原因是年龄，因此研究人员集中研究了年龄在70岁以下的董事“意外”失踪的情况。
3
The evidence of disappearances and abuses grows daily.