As a pioneer who commands a genuine insight into the civilization crisis, Wu is a herald of the May 4 New Literature Movement.

吴敬梓是真切洞察文明危机的先驱，五四新文学运动的先声。

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Pioneer introduced the SPEC-4 power amplifier in 1977.

先锋推出了规格- 4于1977年功率放大器。

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The SPEC-4, like the SPEC-2, was an example of the finest audio engineering Pioneer was capable of.

在SPEC - 4，如规格- 2，是最优秀的音频技术先锋的例子是有能力。

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Pioneer Energy Services Corp shares are currently trading up about 4.3% on the day.

FORBES: Bullish Two Hundred Day Moving Average Cross - PES

Pioneer Natural Resources Co shares are currently trading down about 4.8% on the day.

FORBES: PXD Makes Notable Cross Below Critical Moving Average

Pioneer Energy Services Corp shares are currently trading off about 4.5% on the day.

FORBES: Shares of PES Now Oversold