Conclusion: Pipemidic acid otic solution is highly effective, safe and practical in treating suppurative otitis media.

结论：吡哌酸滴耳剂治疗慢性化脓性中耳炎高效、安全。

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We still can’t figure out how to make hydrogen fuel cells efficient, safe and practical and hybrids/deisal cars are yesterday’s news.

我们仍无法找出让氢燃料电池高效、安全、实用的方法，而混合动力车已是昨日之旧闻。

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The first combination form is a small multiple use table and an infanette with guard rails and feet, which are safe and practical.

组装形式之一为带有护栏和底脚的婴儿床及多用小桌，安全实用。

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The concept of burning away tumors with electric current dates back a century, but it took modern imaging machines to make through-the-needle tumor-burning accurate enough to be safe and practical.

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