Combinatoric
a. 【数学】组合学的
🗣️ 情景例句
Seven o'clock, I'll pick you up at your office.
晚7点，我去办公室接你。
Is the production line fully attomatic?
生产线是全自动的吗？
'At ten to eight.I bought a paper and waited for the train.'
“7点50分。我买了张报纸，等着车来。”