词汇：foolproof

adj. 十分简单的；十分安全的；不会错的

相关场景

It seemed to him the most likely explanation was bears, though he knew it wasn’t a foolproof explanation. If a bear had just walked in and got her, there would have been some blood on the floor. On the other hand, no bear had ever walked into Fort Smith and got a woman, though one had entered a cabin near Catfish Grove and carried off a baby.

在他看来，最有可能的解释是熊，尽管他知道这不是一个万无一失的解释。如果一只熊刚刚走进来抓住她，地板上肯定会有血迹。另一方面，从来没有一只熊走进史密斯堡抓过一个女人，尽管有一只熊进入了鲶鱼林附近的一间小屋，带走了一个婴儿。

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The second rule of gunrunning is: Always ensure you have a foolproof way to get paid.

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