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
What was that about?
说些什么？
I've got a slight pain in my teeth.
我的牙有点痛。
When a thief was caught on the premises of large jewellery store on morning, the shop assistants must have found it impossible to resist the temptation to say 'it serves him right.
“他罪有应得。