Ignoring can be hard to pull off, but it can be extremely effective.
忽视是很难做到的，但是这却非常的有效。
Push-pull air flow is a kind of economical and effective ventilation flow.
吹吸气流是一种经济和有效的通风气流组织形式。
To discuss effective method for leg muscular pull.
探讨大腿肌肉拉伤有效治疗途径。
To discuss effective method for leg muscular pull.
探讨大腿肌肉拉伤有效治疗途径。
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