(每日一词）tribulation

Tribulation  /ˌtrɪb.jəˈleɪ.ʃən/ n. 苦难，磨难，痛苦

meaning: a problem or difficulty 

1) 词根：trib-末摩擦

2) 后缀：-ulation 名词后缀

e.g. The play is about the tribulations of a family of immigrants in New York. 这部剧讲诉的是纽约一个移民家庭的所经受的苦难。