binoculars; field glasses
peerless; unparalleled; unparallelled; mowing down the enemy
peerless; unparalleled; unparallelled; matchless
(two) matchless things; (two) matchless people; pair of bright jewels
written work (esp. a bound text, as opposed to a scroll); a text written entirely in kana; graphic novel (esp. one created between the 12th and 19th centuries); notebook (for practicing kana, drawing pictures, etc.); rough draft
two-way; bidirectional; interactive
amphiaster; diaster; double star; visual double
series (of publications); library (set of books)
hyperbolic curve; hyperbola
having two poles; bipolar
bidirectionality; interactivity
the Double Tenth; October 10th Chinese national holiday
twin-boom aircraft; twin-fuselage aircraft
Twin-to-twin transfusion syndrome; TTTS
Diapsida (class of amniotes)