They are in the vanguard of technological advance.
他们是技术发展的先
。
They are in the vanguard of technological advance.
他们是技术发展的先。
The motorcade was preceded by motorcycles.
摩托车为车队作先。
Error is often the precursor of what is correct,but conceit is the prelude to a fall.
错误往往是正确的先,
是跌
的前
。
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