vital gate

例句：

1. 1. The vital gate isthe only way to enter the forbidden forest.
   生命之门是进入禁林的唯一途径。
2. 2. The scientist discovered a new vitalgate that could potentially save lives.
   科学家发现了一种新的生命之门，可能挽救生命。
3. 3. Thechildren were playing in the vital gate whenthey heard the sirens.
   孩子们在生命之门玩耍时听到了警报声。