Half Adder and Full Adder 半加器和全加器
half adder one-digit adder 半加法器
adder adder
加法器加法器
以上为机器翻译结果，长、整句建议使用 人工翻译 。
The Puff adder, jokes the German geologist, always bites the third geologist.
WSJ: In Geology, Old-Timers Can Be Worth Their Weight in Gold
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