Margin of safety
[计] 安全系数, 安全容限\\n[化] 可靠程度
🧩 词语组成解析
margin
['mɑrdʒən]
n. 边缘，范围;极限;利润，盈余;（版心外）的空白;
vt. 留边;成为…的边;加边于，围绕;为…加旁注;
of
[əv]
prep. 关于;属于…的;由…制成;
aux. 助动词 [非标准用语、方言] =have [主用于虚拟语气];
🗣️ 情景例句
My friends will get a big kick out of getting these.
送劳力士，我同事准乐死了！
I couldn't get through.
电话打不通。
He was a sleek, short man with a bright bald-head, pink face, and gold-rimmed glasses.
他身材矮小，穿着时髦，头光秃，面粉红，戴一副金丝边眼镜。