a strong and determined person
一个坚强和坚定的人 (yī gè jiān qiáng hé jiān dìng de rén)
"She’s a tough cookie who never gives up easily."
"她是一个tough cookie，从不轻易放弃。" (tā shì yī gè **tough cookie**, cóng bù qīng yì fàng qì.)
to connect or become involved in something, usually a system...
a heavy burden or responsibility causing stress
to be likely to become successful in the future
A source of endless complications or trouble.
don’t worry about minor or unimportant things
a secret or unauthorized way to access a system or informati...
