毫无疑问

certainty / without a doubt

hair / drawing brush / (in the) least / one thousandth / currency unit, 0.1 yuan

not in the least / to completely lack

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

undoubtedly; without doubt; for sure

to doubt / to suspect

question / interrogation / doubt

to ask / to inquire

to ask; to inquire