Firstly, as we all know, business is a very challenging field with risks and competition while teaching is a stable profession with little risks.

首先，我们都知道，商业是一个风险和竞争非常具有挑战性的领域，而教学是一个缺乏稳定的职业风险。

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The effect of transfering multichannel signals in sliding loops relates to various tester's ability, and it is a challenging task for the NDT profession.

多路信号经滑环传送效果关系到各种检测设备的性能，是无损检测(NDT)行业着力解决的课题。

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Firstly, as we all know, business is a very challenging field with risks and competition while teaching is a stable profession with little risks.

首先，众所周知，商业是一个带有风险和竞争且具有挑战性的领域，而教育是一个稳定职业，几乎不带有任何风险。

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Teaching is a rewarding and challenging profession where you can make a lasting impact.

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