Question

placid 【placid】adj.平静的The placid lake reflected the image of the old castle.那平静的湖面上映着古堡的影像。

Accepted Answer

['plæsɪd] 
placid(of a body of water) free from disturbance by heavy waves
Call a body of water placid if it has a smooth surface and no waves. Call a person placid if they don't tend to make waves by causing a fuss.
Coming from the Latin placidus "pleasing or gentle," placid is most commonly used to describe a person who is not easily irritated or a body of water such as a lake that does not have waves to disturb the surface. Synonyms of placid in both meanings include calm, serene and tranquil. In other uses, placid describes something with little disruption — like "a placid neighborhood."
All forms of 'placid' will appear on average once every 623 pages.placidplacidityplacidlyplacidness

Front	placid
Pron	['plæsɪd]
Back	【placid】 adj.平静的 The placid lake reflected the image of the old castle. 那平静的湖面上映着古堡的影像。
Vocab	placid(of a body of water) free from disturbance by heavy waves Call a body of water placid if it has a smooth surface and no waves. Call a person placid if they don't tend to make waves by causing a fuss. Coming from the Latin placidus "pleasing or gentle," placid is most commonly used to describe a person who is not easily irritated or a body of water such as a lake that does not have waves to disturb the surface. Synonyms of placid in both meanings include calm, serene and tranquil. In other uses, placid describes something with little disruption — like "a placid neighborhood." All forms of 'placid' will appear on average once every 623 pages. placid placidity placidly placidness

Placid Body Waves Lake Call Water Person Plæsɪd