There is no short cut to achievement. Life requires thorough preparation.
To signal an emergency, use the rule of three; 3 shouts, 3 horn blasts, or 3 whistles.
科学的美妙之处在于它让我们能够探索未知,并做出可以改变世界的发现。
It's not always rainbows and butterflies, it's compromise that moves us along.