句子通过'never'和'squander'等词汇强烈表达了对浪费时间的否定态度，结构清晰。
Seizing today means mastering the opportunity to acquire knowledge; seizing today means holding the potential for invention and creation. Intelligent, diligent, and ambitious individuals deeply understand that time is life, or even more precious than life itself. They never squander the valuable time of today for the sake of tomorrow. The great inventor Thomas Edison always cherished time, using his spare moments while selling newspapers on trains to conduct experiments. When thirsty, he would drink some cold water; when hungry, he would nibble on a piece of bread; when sleepy, he would doze off at his desk. Newton, Marie Curie, Einstein... all those with ambition and achievement are the same. They do not indulge in the past, nor do they passively wait for the future; they always start from "today."
In contrast, for some people, time is like a calendar. They tear off one page, and there is another; they finish one book, and there is the next. Yet, they fail to leave the sweat of their hard work on the snow-white pages. From their first understanding of life to their final rest, they spend their existence in idleness, observation, and waiting. If one's life is spent this way, the passing years will be a tragic and desolate play. The memories left in their personal history will be mixed with tears of regret, pain, and sorrow...
Wasting time erodes the light of life; acting promptly opens the path of thought. Friends, do not dwell on yesterday, do not wait for tomorrow. Let everything begin from today! Today is the starting point of struggle.
抓住今天，就是掌握了获取知识的时机；抓住今天，就拥有了发明创造的可能。那些聪明、勤奋且志向远大的人，深知时间即是生命，甚至认为其比生命更为珍贵。他们绝不会将今日宝贵的时光轻易浪费给明天。伟大的发明家爱迪生向来珍视时间，他利用在火车上卖报的间隙进行实验：口渴时喝口凉水，饥饿时啃块面包，困倦时趴在桌上打个盹。牛顿、居里夫人、爱因斯坦……所有有志向、有成就的人皆如此。他们从不沉溺于昨日，也不空洞地观望明日，而是永远从“今天”起步。
反之，对某些人而言，时间就像一本日历，撕掉这一页还有下一页，用完这一本还有下一本。然而，他们却未在洁白如雪的纸页上留下辛勤奋斗的汗水。从初识生活到长眠地下，他们始终在闲散、观望和等待中度过。若人生如此虚度，消逝的岁月终将是一场凄凉的悲剧。留在个人生命史上的回忆，也将混杂着悔恨、痛苦和哀伤的泪水……
虚掷光阴，折损的是生命的光芒；及时奋起，开辟的是思想的道路。朋友，不要沉湎于昨天，不要观望明天，一切请从今天开始吧！今天，才是奋斗的起点啊！
"Life is a one-way street without chances to restart completely."
"Life is simply a journey, so we should move forward while cherishing every moment."
"Every day is unique; I will cherish it and work harder."
"To live even one day is a blessing and should be cherished."
"When happiness arrives, remember it is not eternal."