单词	billion
释义	Billion A thousand millions. 1,000 x 1,000,000 = 1,000,000,000 Which is a 1 followed by 9 zeros Using scientific notation: 1 × 109 The diameter of the Sun is just over a billion meters The prefix "giga-" means a billion. Example: a gigameter is a billion meters (one million km), which is a little less then the diameter of the Sun. (In many non-English speaking countries a billion means a million million, which is a 1 followed by 12 zeros, or 1 × 1012) Below is a cube made of a million smaller cubes. If each of the small cubes is worth a thousand dollars, then the whole cube is worth a billion dollars.
随便看	survey symbol symmetry system of equations table tables tabular tabulate take-home pay tally mark tangent (function) tangent (line) tangent to an ellipse tangram tanh tax temperature tenth tera- term terminating decimal ternary tessellation tetragon tetrahedron

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