a rock
表示单个岩石，可数。
I picked up a smooth rock from the river.
我从河里捡起一块光滑的岩石。
摇滚乐；摇摆；晃动；靠山；支柱；可靠的人；冰块；岩丘；岩岛
Hard natural material made of minerals; a piece or mass of stone.
矿物的形成物,具体指:
A formation of minerals, specifically:
摇动的动作；摇摆；晃动。
An act of rocking; a rocking motion; a sway.
一种以基本鼓点、通常为4/4拍即兴段为特征的音乐风格,以(通常为电)吉他、贝斯、鼓、键盘(常有)和人声为基础。
A style of music characterized by basic drum-beat, generally 4/4 riffs, based on (usually electric) guitar, bass guitar, drums, keyboards (often), and vocals.
手纺杆。
Distaff.
坚硬的矿物块
a lump or mass of hard consolidated mineral matter
没有植被的大山丘或岛屿。
A large hill or island having no vegetation.
手纺杆上的亚麻或羊毛。
The flax or wool on a distaff.
构成地壳的矿物集合体
material consisting of the aggregate of minerals like those making up the Earth's crust
坚强、稳定、可靠的事物；为他人提供安全或支持的人。
Something that is strong, stable, and dependable; a person who provides security or support to another.
美国妇科医生、虔诚天主教徒,进行了口服避孕药的首次临床试验(1890-1984)
United States gynecologist and devout Catholic who conducted the first clinical trials of the oral contraceptive pill (1890-1984)
一块或一立方体的冰。
A lump or cube of ice.
几种鱼中的任何一种:
Any of several fish:
石头(stone)的同义词。
Synonym of stone.
握紧的手(形似石头的姿势),胜过剪刀,输给布；在“石头-剪刀-布-蜥蜴-斯波克”中胜过蜥蜴,输给斯波克。
A closed hand (a handshape resembling a rock), that beats scissors and loses to paper. It beats lizard and loses to Spock in rock-paper-scissors-lizard-Spock.
用于控制无线电频率的晶体。
A crystal used to control the radio frequency.
廉价的高尔夫球。
A cheap golf ball.
He picked up a rock from the ground.
他从地上捡起一块岩石。
用法提示：rock 作为可数名词，意为“岩石”，在句中作宾语。
AI contextual example
The mountain is made of solid rock.
这座山是由坚固的岩石构成的。
用法提示：rock 作为不可数名词，表示“岩石”这种物质。
AI contextual example
She sat on a large rock by the river.
她坐在河边的一块大岩石上。
用法提示：rock 作为可数名词，指具体的石块，在句中作地点状语。
AI contextual example
表示单个岩石，可数。
I picked up a smooth rock from the river.
我从河里捡起一块光滑的岩石。
复数形式表示多个岩石。
The children threw rocks into the pond.
孩子们把石块扔进池塘。
定冠词特指某块岩石。
The rock on the cliff is very old.
悬崖上的那块岩石非常古老。
物质名词，不可数。
The cave is made of solid rock.
这个洞穴由坚固的岩石构成。
grammar · medium
易错句子The wall is built with a rock.
正确表达The wall is built with rock.
当rock表示“岩石材料”时是不可数名词，不加冠词。用“a rock”表示一块具体的石头，但此处指材料，应使用不可数形式。
grammar · medium
易错句子There are many rock in the river.
正确表达There are many rocks in the river.
当rock表示可数的“石块”时，需要加-s变成复数形式。中文“很多石头”没有复数标记，但英文要加s。
硬岩
The tunnel was dug through hard rock.
隧道是从硬岩中挖出来的。
坚固的岩石
The foundation must be built on solid rock.
地基必须建在坚固的岩石上。
岩壁
The climbers ascended the steep rock face.
攀登者登上了陡峭的岩壁。
岩石构造
These rock formations are millions of years old.
这些岩石构造已有数百万年历史。
攀岩
Rock climbing requires strength and skill.
攀岩需要力量和技巧。
进退两难
I'm stuck between a rock and a hard place—if I quit, I'll lose my income; if I stay, I'll be miserable.
我进退两难——辞职会失去收入，留下又会很痛苦。
濒临崩溃（尤指婚姻）或加冰的（饮料）
Their marriage has been on the rocks for years.
他们的婚姻多年来一直濒临破裂。
最低点，谷底
After losing his job and his home, he hit rock bottom.
失去工作和家后，他跌到了谷底。
我们要，我们要震撼你
The crowd sang along to 'We Will Rock You' by Queen.
人群跟着皇后乐队的《We Will Rock You》一起唱。
你闻到巨石在煮什么了吗！
Dwayne Johnson, known as The Rock, delivered his iconic catchphrase in WWE.
道恩·强森，人称‘巨石’，在WWE中喊出了他的经典口号。
Dictionary facts from DICTIONARY_API_DEV, ECDICT, WIKTIONARY.