Guardrail
n. 护栏, 护轨
✅ 同义词
🗣️ 情景例句
Talking to the real-estate agent.
与房地产仲介商谈。
I tried several times to call, but there is no answer.
我打了几次，但是没有人回答。
“I wish I'd known about that rule earlier, she said.
“我要是早点知道这个规矩就好了！”她说。