a constant source of annoyance or trouble
不断的烦恼或问题的来源 (bùduàn de fánnǎo huò wèntí de láiyuán)
"The trade dispute has become a thorn in our side."
"贸易争端已成为我们侧面的刺。" (màoyì zhēngduān yǐ chéngwéi **wǒmen cèmiàn de cì**.)
to feel extremely good or happy
in written form; clearly stated
extremely sad about something or someone
to make people notice something immediately
to sound familiar or remind someone of something
to earn a lot of money
