thinner, thinnest
- having opposite surfaces or sides close together; of little thickness or depth薄的; 细的：
thin slices of bread.
薄面包片。
- (of a person) having little, or too little, flesh or fat on their body（人）瘦（削）的：
she was painfully thin.
她瘦得可怜。
- (of a garment or other knitted or woven item) made of light material for coolness or elegance（衣服, 织物）轻薄的, 凉爽的。
- (of a garment) having had a considerable amount of fabric worn away（衣服）磨薄的, 不结实的。
- (of script or type) consisting of narrow lines（字体）细体的：
tall, thin lettering.
瘦长字体。
- having few parts or members relative to the area covered or filled; sparse稀少的, 稀疏的; 缺乏的：
a depressingly thin crowd
令人沮丧的稀稀拉拉的一堆人
his hair was going thin.
他的头发日渐稀少了。
- not dense稀薄的：
the thin cold air of the mountains.
山中稀薄的冷空气。
- containing much liquid and not much solid substance稀的, 不黏稠的：
thin soup.
清汤。
- Climbing denoting a route on which the holds are small or scarce【登山】难找到手攀（或脚踏）处的。
- (of a sound) faint and high-pitched（声音）细的; 尖的：
a thin, reedy little voice.
尖细的微弱声音。
- (of a smile) weak and forced（笑容）淡淡的, 勉强的。
- too weak to justify a result or effect; inadequate不能令人信服的; 不充足的：
the evidence is rather thin.
证据根本不足于服人。
- with little thickness or depth薄; 细; 稀; 疏; 淡; 微：
thin-sliced ham
薄薄的火腿片
cut it as thin as possible.
尽量切细。
thinned, thinning
- make or become less dense, crowded, or numerous使稀薄（或稀疏、减少）; 变稀薄（或稀疏）, 变少：
with obj. the remorseless fire of archers thinned their ranks弓箭手残忍的射击使他们的人数减少了
no obj. the trees began to thin out树木开始凋零
as adj. thinning thinning hair.日渐稀疏的头发。
- with obj. remove some plants from (a row or area) to allow the others more room to grow给…间苗, 间开：
thin out over-wintered rows of peas.
把已越冬的一排排豆子间开。
- make or become weaker or more watery使变稀（或不黏稠）：
with obj. if the soup is too thick, add a little water to thin it down如果汤太浓, 就加点水把它兑稀点
no obj. the blood thins.血液浓度降低了。
- make or become smaller in width or thickness使（变）薄（或细）：
with obj. their effect in thinning the ozone layer is probably slowing the global warming trend他们在减小臭氧层方面的作用很可能就是减缓全球变暖的趋势
no obj. the linen had thinned and shrunk with frequent laundering.由于不断清洗, 内衣裤已变得单薄而且缩水。
- with obj. Golf hit (a ball) above its centre【高尔夫】打（球的）中上部位。
have a thin time
- Brit. informal have a wretched or uncomfortable time〈英, 非正式〉过得很不舒服。
on thin ice
- 见ICE.
thin air
- used to refer to the state of being invisible or non-existent无影无踪, 了无踪影; 不存在：
she just vanished into thin air
她消失得无影无踪
they seemed to pluck numbers out of thin air.
他们似乎在凭空拨弄是非。
the thin blue line
- informal used to refer to the police, typically in the context of situations of civil unrest〈非正式〉（多指社会动荡环境下的）警察。
thin end of the wedge
- 见WEDGE1.
thin on the ground
- 见GROUND1.
thin on top
- informal balding〈非正式〉头发稀疏的。