spring latch

例句：

1. 1. The door was securely fastened with a spring latch.
   门用一个弹簧锁安全地固定住了。
2. 2.The child climbed up to the top of the tree and secured the spring latch.
   孩子爬上树顶，把弹簧锁系紧了。
3. 3. The old key had worn out, so they replaced it with a new spring latch.
   旧钥匙磨损了，所以他们换了个新的弹簧锁。