Adjective:
of a body of water free from disturbance by heavy waves;a ribbon of sand between the angry sea and the placid bay
the quiet waters of a lagoon
a lake of tranquil blue water reflecting a tranquil blue sky
a smooth channel crossing
scarcely a ripple on the still water
unruffled water
not agitated; without losing self-possession;spoke in a calm voice
remained calm throughout the uproar
he remained serene in the midst of turbulence
a serene expression on her face
she became more tranquil
tranquil life in the country
tranquil state虚无身tranquil flow平静流动
近义词 calm平静的cool凉爽的quiet安静的still静止的serene安详的placid平静的content 内容smooth光滑的pacific温和的relaxed放松的peaceful和平的composed镇静的relaxing轻松的soothing安慰的orderly有秩序的patient有耐心的unruffled平静的laid-back松驰的unagitated平静的peaceable不争吵的collected收集成的equable性情温和的restful益于休息的unworried不着急的untroubled未被扰乱的self-possessed镇静的undisturbed未受干扰的unperturbed未受到搅乱的…反义词 noisy喧闹的
用作形容词adj.
用作定语
～+ n.The boy disturbed the tranquil surface of the pond with a stick.那男孩用棍子打破了平静的池面。
The tranquil beauty of the village scenery is unique.这乡村有它独特的宁静之美。
There was a tranquil expression on his face.他脸上有一种安详自若的表情。
用作表语
S+be+～The surface of the water was not tranquil during the storm.在暴风雨中水面不再平静。
形容词81%,名词19%
用作形容词The countryside is very tranquil, with less people.乡下挺安静的，人没那么多。
Driven by primordial instinct, the salmon hurl themselves upstream to spawn in the same tranquil pools where they themselves were born.由原始的本能所驱动，大马哈鱼会奋力逆流而上在它们出生的同一个安静的水池内产卵。
A peaceful and tranquil atmo here permeates the place.这地方充满着一种宁静的气氛。
In this tranquil night, you may know what I am thinking?在这个宁静的夜晚，你可知道我在想些什么吗？