作为一名保护者,父母可通过拥抱与孩子接触。
The mathematician does not study pure mathematics because it is useful; he studies it because he delights in it and he delights in it because it is beautiful.
The minerals we extract today must serve the needs of future generations as well.
除非某处的某人宁愿你不做这件事,否则这件事就不值得做。