For people who need additional instruction, the Sports Administration has made a special DVD and manual set of the 9th Edition, which is available for around $12 at bookstores.

对需要额外指导的人，国家体育总局特别制作了第九套广播体操DVD和手册，在书店约12美元就能买到。

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If crutches are required, it should not be assumed that the patient received preoperative instruction. Additional instruction should be offered.

如果需要拐杖，不要认为病人术前已接受过指导，应该给予另外的指导。

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U.S.Army 2nd Lieutenant Gregory Avant abandons the first checkpoint and, after additional instruction, tells the police to start over fresh at another position.

VOA: standard.2009.12.13

The program will require these highly effective teachers to model STEM instruction for their peers and take on additional responsibilities in their school districts.

WHITEHOUSE: President Obama Announces New Plan to Create STEM Master Teaching Corps | The White House