Eurypterida
板足鲎类
🗣️ 情景例句
Thank you.
谢谢各位。
Don't whistle until you are out of the wood.
没有脱离险境，不要过早高兴。
In the evenings he studied hard for his exams, and most mornings he took tourists around Oxford.
他晚间努力学习，以应付考试，而大多数早上，他则带领游客在牛津大学参观。