数学: mathematics, mathematical...
身体: the body, one's health, in person...
如此: in this way, so...
钻石: diamond...
测算: to take measurements and calculate...
书: book, letter, document, to write...
啦: sentence-final particle, contraction of, indicating exclamation, particle placed after each item in a list of examples...
反射: to reflect, reflection (from a mirror etc), reflex (i.e. automatic reaction of organism)...
刀: knife, blade, single-edged sword, cutlass, (slang) dollar (loanword), classifier for sets of one hundred sheets (of paper), classifier for knife cuts or stabs...
