Fault-tree
故障树；失效树
🧩 词语组成解析
fault
[fɔlt]
n. 缺点，缺陷;过错，责任;[电]故障;（猎狗的）失去嗅迹;
vt. 挑剔，找…的缺点;批评;做错，在…中出错;[地质学]产生断层;
vi. 找错误，挑剔;[地质学]变动从而产生断层;
fault=fal错 → 过失，缺点
tree
[tri]
n. 树;木料;树状图;宗谱;
vt. 把…赶上树;使处于困境;把鞋型插入（鞋内）;
🗣️ 情景例句
and wrote to his wife Martha.
给他妻子Martha写信。
To fall down
掉下
Wei Hua's pen was broken, so she needed a new one.
魏华的钢笔坏了，所以她需要一支新笔。