luxury

「luxury」是「（近乎浪費的）奢侈」；也可說是「難得的享受、樂趣」 ， 例如：

In its day, the Titanic was the largest and most luxurious ocean liner afloat.（鐵達尼號是當時最大、最豪奢的航輪。）

My wife and I are going to enjoy the luxury of a weekend without kids for the first time in years.（我和妻子將享受多年來第一次沒有孩子的周末假期。）

Skiing is a luxury that we can afford only once a year or so.（滑雪是一種奢侈，我們一年左右只能負擔得起一次。）

submerge

「submerge」是「淹沒在水中；埋首於…」， 例如：

The submarine submerged to avoid enemy ships.（潛艇潛入水中以避免敵艦。）

After the heavy rain, the whole village and the fields have been submerged by floods.（大雨過後，整個村莊和田野都被洪水淹沒。）

Alice submerged herself in work and try to forget unhappy things.（愛麗絲沉迷於工作中，並試圖忘記不開心的事。）

hurry back

「hurry back」是「迅速返回」， 例如：

Being late for dinner, he slipped out of the pew and hurried back down the aisle.（趕不上吃晚飯的時間，他溜出戲院的座位，匆匆往通道走去。）

On hearing that accidental, she did a hasty kick turn and hurried back to her family.（聽到那意外事件，她猛地轉彎、急忙回到家人身邊。）

Oh, please hurry back to those helpless kids as soon as you can.（哦，請盡快回去幫那些無助的孩子。）