Never say die.

例句：

1. 1. I'll never say die if it means I get to see my son graduate from college.
   如果这意味着我能看到我的儿子大学毕业，我会永不言弃。
2. 2.She kept going even when she was exhausted and had no energy left.
   即使她筋疲力尽，没有一点精力了，她也坚持不懈。
3. 3. He hung in there until the storm passed and he could see the sun again.
   他坚持到了暴风雨过去，能再次看到太阳。