Foolproofness
安全装置
🗣️ 情景例句
I'm sure it's in your purse, Mrs. Tobin.
我相信是在你的皮包 Tobin太太。
Would you please call a taxi for me?
可以请你帮我叫一辆出租车吗？
It was not yet light, so it was easy to stay hidden.
天还没亮，所以很容易隐蔽。