flight [flaɪt] 词频2 词根: fl-

n. （物体的）飞行;航班;飞翔;楼梯的一段; vi. 成群地迁徙或飞行; vt. 射击;使惊飞;

💡 fly(飞行)+t(表示抽象名词的后缀)→飞行；飞翔

"They are following the flight of an aircraft by radar."

近义：connection, connexion, soaring, run, scurry, scuttle

Sunday ['sʌnde] 词频1

n. 星期日，星期天;每逢星期日出版的报纸;星期日报;[人名] 森迪;

💡 Sun日+day天→星期日

"She contrived to spend a couple of hours with him every Sunday evening."

近义：dominical

northwest ['nɔrθ'wɛst] 词频3

n. 西北，西北方向;西北部; adj. 在西北的;西北部的;向西北的;（风、光线）来自西北方的; adv. 自西北地;

💡 north北方+west西方 → n.西北 a.位于西北的

"Take the northwest road; it is the shortest way."

近义：northwestern

thirteenth ['θə:ti:nθ] 词频1

adj. 第十三的;十三分之一的; n. 第十三;十三分之一;

"It was still producing very considerable results in the thirteenth century."

leaving

n. 离开；残余；渣滓

近义：parting, withdrawment, departure, egress, exit, exodus 反义：approaching, incoming, reentrant, coming, entrant