catch up: If you catch up on friends who you have not seen for some time or on their lives, you talk to them and find out what has happened in their lives since you last talked together. 叙旧
"I guess we'll just go home and chill out and catch up." （我们可以直接回家休息放松一下再叙叙旧）----BBC News
"Nice to catch up with you again and I'll see you soon." （很高兴和你叙旧，我们很快会再见面的！）----BBC NEWS
upgrade: to make a computer, machine, or piece of software better and able to do more things 使〔计算机、机器、软件〕升级
这里的剧情是妹妹问姐姐是不是整容了，姐姐就说自己升级换代了一下，也就是承认自己确实整容了。
nosebleed: if you have a nosebleed, blood starts flowing from your nose 鼻出血，流鼻血
"I haven't had a nosebleed since I was little." （我从小就没有流过鼻血）----美剧《迷失》
have/get a nosebleed 就是流鼻血
That's all for today
May 29, 2018. XOXO
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