... 泄压口（pressure relief opening) 过程中点（course middle point) 无毒性反应浓度（NOAEL浓度）（NOAEL concentration) ...
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course middle point
航向中点
以上为机器翻译结果，长、整句建议使用 人工翻译 。
If safeguarding international security is the chief aim of US President Barack Obama's foreign policy, then at some point he can be expected to change course in the Middle East.
CENTERFORSECURITYPOLICY: Barreling on, regardless
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