This is the most costful present in my birthday.
这是我最珍贵的生日礼物。
Silk is the costful breed of natural fibres, and the developing of natural color silk will be affirmatively more welcomed.
蚕丝是天然纤维中的珍贵品种，天然彩丝织物的开发和应用必将更加受到人们的关注。
Not only maximal loss lie in the costful score original copy and manuscript, but also lie in the music score of the philharmonic orchestra data.
最大的损失不仅在于珍贵的总谱原件和手稿，更在于乐团的乐谱数据。
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