Pseudoconcave
伪凹(的)
🗣️ 情景例句
Good morning, Mr. Tao.
早上好，陶先生。
I would like to confirm the reserved seat.
我要确定已预定的位置。
who produced it with a flourish and pointed out a microscopic 'o' beside the time of the arrival of the train at his station;
站长拿着时刻表一挥手，指着那趟列车到站时刻旁边一个很小的圆圈标记。