I can't seem to shake off this cold.
这场感冒我好像老好不了。
My cold's better, but I can't seem to shake off this cough.
我感冒好些了，但这咳嗽好像老也不好。
I've got a stinking cold.
我得了这该死的感冒。
I had a cold and couldn't decide whether to go to work or not
我感冒了，拿不定主意是否要去上班。
A cold is an infection of the upper respiratory tract.
感冒是上呼吸道的感染。