retaining lever catch

例句：

1. 1. The engineer designed a retaining lever catch to prevent the wall from collapsing.
   工程师设计了一个保持杠杆卡子以防止墙倒塌。
2. 2. The construction crew used a retaining lever catch to secure the concrete beams in place.
   施工队使用一个保持杠杆卡子来固定混凝土梁。
3. 3. The retaining lever catch was crucial for maintaining stability during the construction process.
   保持杠杆卡子在建设过程中对于保持稳定性至关重要。