無從下手

not know where to start

not to have / no / none / not / to lack / un- / -less

not to have access / beyond one's authority or capability / sth one has no way of doing

from / through / via / to follow / to obey / to engage in (an activity) / never (in negative sentence) / (Taiwan pr. [zong4]) retainer / assistant / auxiliary / subordinate / related by common paternal grandfather or earlier ancestor

down / downwards / below / lower / later / next (week etc) / second (of two parts) / to decline / to go down / to arrive at (a decision, conclusion etc) / measure word to show the frequency of an action

to start / to put one's hand to / to set about / the seat to the right of the main guest

hand / (formal) to hold / person engaged in certain types of work / person skilled in certain types of work / personal(ly) / convenient / classifier for skill / CL:雙|双[shuang1],隻|只[zhi1]

like mice trying to pull a turtle, nowhere to get a hand grip (idiom) / no clue where to start