better to ask and be embarrassed than not ask and never know
weld; weld zone; welded part
cryptography; encryption technology
encryption key; cryptographic key
going up and down; ascent and descent; climb and descent
origin; fundamental element
to disrupt; to ruin; to hinder; to thwart
nuclear fission; fission reaction
airfoil profile; aerofoil profile; wing section
bad things happen to those who attempt things; (lit.) if a dog walks they will hit a stick; good luck may come unexpectedly
monkey (esp. the Japanese macaque, Macaca fuscata); ape; non-human primate
to be caught by the enemy
dim-witted; airheaded; bird-brained; dim; dullard; blockheaded
person of virtue; great person; giant; adult; exalted person
to pull one's hair back into a bun
notebook-format (computer)
characteristic vibration; normal mode
encumbrance; burden; drag
recoilless rifle; recoilless gun
utmost limit; extremity; result
to praise highly; to sing the praises of; to applaud; to acclaim; to admire
to clear away; to remove; to demolish
ruffian; villain; peculiar person; idiosyncratic person; tricky thing; something that is more than it seems
changeable; unsettled; inconstant; fickle (e.g. weather)
(fig.) rat in a trap; (fig.) trapped rat; (lit.) rat in a bag