SNSから離れるティーンエイジャー
relentless：徹底的な、絶え間ない、残虐な、容赦ない（ある目標に向けて忍耐強く執着するイメージ）
strict, cruel, or determined, without ever stopping
〜pursuit, attack, bombing, criticism, approach, assault
「vocabulary.comからの引用」
Relentless is a good word for describing something that's harsh, unforgiving, and persistent, like the hot sun in the desert, or a cold that keeps you in bed for days with a nose like a strawberry.
When you're relentless about something, you mean business. You're not stopping until you get what you want, and you're not taking "no" for an answer. People might try to steer you from your goal, but you have eyes only for the prize and they're just going to have to get out of your way. If you're a relentless student, for instance, you might stay up all night studying your vocabulary, just in case there might be a quiz in the morning.
opt out of：（団体・活動から）身を引く、脱退する
advent：出現、到来
be tied to：縛り付ける
restrict or limit someone to a particular situation, occupation, or place
immediacy：緊急性、緊迫（urgency）
note：指摘する
calibrate：計測する、修正・調整する
【vocabulary.comからの引用】
The word calibrate means making precise measurement. For example, you might want to calibrate your bathroom scale now and then to be sure it’s adjusted for exact weight. Orcalibrate it to read five pounds light. We won't tell.
To find the origin of calibrate, we must look at its root,caliber, which appeared in the late 15th Century Middle French as calibre, meaning "a degree of importance." Linguists trace that word to an Arabic beginning, the word qalib, which referred to a mold for making bullets. That meaning seems to have carried over to our word, the verb calibrate, which first meant to measure the range of a projectile such as a bullet or shell.
leave out：のけ者にする、閉め出す
project A onto B：投影する、（気持ちなどを）人と同じであるとみなす
chronic：慢性の、長引く、常習の
exploits：偉業、功績、手柄
a brave, exciting, or interesting act
measure：（質、価値、効果など）を測る、評価する、判断する
sanguine：楽観的な（＝optimistic）
