Inarticulata
无铰纲; 无铰腕足纲; 无关节纲
🗣️ 情景例句
Hi, Susan.
嗨 Susan。
Napolean himself was once a crying baby.
即使是拿破仑，过去也是啼哭的婴孩。
One of links in the chain that drives the wheels had snapped.
驱动轮子的链条断了一节。