Base-apex line
[医] 底尖线, 折光角等分线
🧩 词语组成解析
base
[bes]
n. 基础;基地;根据;基数（如十进制的10 和二进制的2）;
vt. 基于;把…建立在;把…放在或设在（基地）;把…置于底座（或基座）上;
adj. 卑鄙的;低级的;贱的，劣的;庶生的;
bas,base 表示”低下,基础”
apex
['epɛks]
n. 顶;<喻>顶峰;<美><矿>脉尖;尖端;
line
[laɪn]
n. 线条;排;行列;界线;
vt. 排队;用线标出;沿…排列成行;给…安衬里;
vi. 形成一层;排队;击出平直球;
🗣️ 情景例句
He's a very famous person in Chinatown. He's also from your home city, Peking.
他在唐人街大名鼎鼎，他也是从你的家乡北京来的。
Riff raff!
痞子！
The silence was suddenly broken when a large car, with its headlights on and its home blaring, roared down the arcade.
宁静突然被打破，一辆大轿车亮着前灯，响着喇叭，呼啸着冲进了拱廊街，