secure site

例句：

1. 1. The new securitymeasures have greatly improved the safety of ourcampus.
   新的安全措施极大地提高了我们校园的安全。
2. 2. We need to secure the meeting roombefore it gets too crowded.
   我们需要在会议开始前确保会议室不拥挤。
3. 3. The companyhas secured a contract with a major client.
   该公司已经与一家主要客户签订了合同。