stiff ⇒ 计算机前坐久了浑身会僵硬。 Jìsuànjī qián zuòjiǔle húnshēn huì jiāngyìng. → If you sit in front of a computer a long time you get stiff.

stubborn

hard

tough ⇒ 采取强硬的态度 cǎiqǔ qiángyìng de tàidù → take a tough stance

( 形容硬 ) stiff

( 不自然 ) unnatural

( 计算机 ) hardware

( 变硬 ) harden

coin

hardness ⇒ 这种木头硬度不高。 Zhè zhǒng mùtou yìngdù bù gāo. → This kind of wood is not hard enough. ⇒ 这种水硬度太高，不适合饮用。 Zhè zhǒng shuǐ yìngdù tài gāo, bù shìhé yǐnyòng. → This kind of water is too hard: it's not suitable for drinking.

inflexible

( 口 ) sturdy

hard disk

completely proficient

rock hard

copy ... mechanically ⇒ 对别人的学习方法不能生搬硬套。 Duì biérén de xuéxí fāngfǎ bùnéng shēng bān yìng tào. → One should not mechanically copy other students' study methods.

( 贬 ) use both hard and soft tactics