seatmate

noun

1. （尤指飞机上的）邻座乘客
   a person that you sit next to when you are travelling, especially on a plane

1. In 2008, a mentally ill passenger repeatedly stabbed and decapitated his seatmate on a Greyhound bus in Canada.
   2008年，加拿大曾发生一起骇人听闻的惨案，一名精神有疾病的华裔灰狗乘客在巴士上用刀刺死邻座，甚至把对方的头和其他身体器官砍了下来。
2. 'If I'm on an airplane, and my seatmate starts making a phone call, there's not a lot of places I can go,' she says.
   她说：假如我坐在飞机上，我的同座开始打电话，我能够躲的地方可不多。
3. All I wanted was a chance to read my book, but my seatmate talked my ear off.
   我巴不得能有机会看书，但我的同桌却唠唠叨叨地说个不停。