Perisome
[医]体壁（棘皮动物）
🗣️ 情景例句
I see him on the train every day but we are not on speaking terms.
我每天都在火车上见到他，但彼此没有说过话。
We've increased our efficiency by 20% through automation.
通过自动化我们的效率增加了20%。
Sometimes were go upstream to a favourite backwater, sometimes we have our party at the boathouse,
有时，我们溯流而上来到我们喜爱的回水河汊举办；有时在船坞举办。