synthesized voice; synthesized speech
fluent (in a language); flowing
state-of-the-art; cutting-edge
last century; previous century; ancient times; old times
environmental problem; environmental issue
century; hundred years; (fig.) a long time
coastline; shoreline; coastal railway
kilo-; 1000; kilogram; kilogramme; kilometre; kilometer
two-digit number; "tens" column; two digits; double figures
first; firstly; first of all; Introduction; Preface
10,000,000,000; ten billion
hundred million; 100,000,000; 10^8
extinction; annihilation; destruction
(sense of) reality; realness; realism; authenticity; viability
two characters; two letters; (arch.) garlic chives (Allium tuberosum); (arch.) Chinese chives
environmental destruction
beginning; start; first (in line, etc.); origin; such as ...; not to mention ...
governments of various countries
beyond help; there's nothing that can be done
being unhuman; being removed from humanity; being unworldly
single; simple; sole; individual; unitary
excelling; surpassing; outdoing
ability; performance; efficiency
certain; some kind of; some sort of; of sorts
clear insight; resignation (to one's fate); acceptance
quantization; quantisation; quantizing