logistical support and safty
...事先设置标志put signs in advance 后勤保障和安全logistical support and safty 本次活动要做好后勤保障和安全工作the logistical support and safty measures must be prepared for this activity， ..
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logistical support and safty
后勤保障和安全
以上为机器翻译结果，长、整句建议使用 人工翻译 。