sandkey

例句：

1. 1. The sandkey was a crucial piece of evidence in the case.
   沙钥匙是案件中至关重要的证据。
2. 2. The sandkey had been used to open the door for many years.
   沙钥匙已经被使用多年来打开门。
3. 3. The sandkey was carefully placed in the lock to ensure it worked properly.
   沙钥匙被小心地放置到锁里，以确保它能正常工作。