not thick or wide
The paper is very thin and tears easily.
这张纸非常薄,很容易撕破。
not fat; having little body fat
She has a thin body but eats a lot.
她身材很瘦,但吃得很多。
not dense or crowded
The thin forest has few trees.
这片稀疏的森林树木很少。
watery; not thick
The thin soup needs more ingredients.
这稀薄的汤需要更多食材。
easy to see through
The thin curtain lets light through.
这薄窗帘能让光线透进来。
having little air
The thin air on the mountain makes breathing hard.
山上稀薄的空气让呼吸变得困难。
weak and high-pitched
Her thin voice was hard to hear.
她微弱的声音很难听清。
not genuine or strong
He gave a thin smile that didn't reach his eyes.
他露出了一个不真诚的微笑,眼神里没有笑意。
dim; not bright
The thin light of dawn slowly filled the room.
黎明微弱的光线慢慢充满了房间。
poor in quality or amount
The thin selection of books disappointed her.
书籍选择贫乏让她感到失望。
in thin slices or layers
Cut the cheese thin for the sandwich.
把奶酪切成薄片做三明治。
to make a liquid less thick
Add water to thin the paint.
加水稀释油漆。
to become less thick
His hair is starting to thin on top.
他头顶的头发开始变稀疏了。
to reduce in number or density
Thin the plants to give them space to grow.
间苗给植物生长空间。