Holothurioidea
[医]海参纲
🗣️ 情景例句
It's six o'clock.
已经六点了。
You don not have to reveal your age.
你不必透露你的年龄。
In the centre of the hall, there were a number of tall structures which contained coloured lights.
展厅中央是装有彩色灯泡的许多高高的构件，