The labor which it would require to make a single one of these guns by hand would exhaust the patience and perseverance of any ordinary workman.

团队的力量在于其成员的多样性。

一年最好的时光在春天，一天最好的时光在早晨；一家最重要的是和睦，一生最重要的是勤奋。

除非定理是美丽的，否则它们毫无价值。