xiǎoxīn
小心 v. be careful; adj. careful
nǐ yào duō jiā xiǎoxīn。
你要多加小心。
you should be more careful.
wǒ hěn xiǎoxīn de xiězuò。
我很小心地写作。
I wrote carefully.
lěngjìng
冷静 adj. quiet; cool-headed
wǒ xūyào yíduànshíjiān lěngjìng yíxià.
我需要一段时间冷静一下。
I need some time to gather myself together.
tā chǔlǐwèntí chénzhuólěngjìng.
他处理问题沉着冷静。
He deals with problems calmly and soberly.