The ultimate balance between jobs created and killed is difficult to pin down, but the net result is far murkier than it might seem.

增加就业和降低就业很难保持完全平衡，但是结果远不是像看上去的那样清晰。

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Question: How do I access my balance online, change my card's PIN or view my transaction history?

问：我如何进入我的网上账户、修改我的卡密码和查看我的历史交易记录？

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Sealing coring tools mainly consists of external threaded adapter, balance piston, limit joint, inner and outer barrel, core catcher, locating pin, sealing head and coring bit.

密闭取心工具主要由外螺纹接头、平衡活塞、限位接头、内外筒、卡箍岩心爪、定位销、密封头、及取心钻头等部件组成。

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It's an agreement between anti-abortion and pro-abortion rights lawmakers that is so delicate it could balance on a pin.

NPR: Health Care Passage Hinged On Abortion Language