手足无措: have no idea [not to know] what to do with one's hands and feet; at a loss what to do; be bewildered; confused; discomposed; disconcerted; feel completely at a loss; in discomfiture; perpl
煞费苦心: rack one's brains; bestow [give] great care upon [to]; cudgel one's brains; go through a lot of trouble; great pains have been taken to...; it takes great [a lot of] pain.; painstakingly;
