在“天问一号”之前，没有国家尝试过在单次火星探测中发射轨道飞行器、着陆器和探测器。
Before Tianwen l, no country had ever tried to send an orbiter, a lander and a rover in one single expedition to Mars.
我们在乍得的恩内迪沙漠中所攀登的悬崖之前从没有人尝试过。
Some of the faces we climbed in Chad in the Ennedi desert have never been attempted before.
爱迪生曾为了找到完美的纤维，辛苦地工作着，在发现理想的材料一种日本竹纤维之前，他尝试过碳化纤维、须发和卷得非常紧的名片。
Edison also worked hardest to find the perfect filament, trying carbonised thread, beard-hair and very tightly rolled calling CARDS, before lighting on the ideal material, bamboo from Japan.
大约在一年之前，我在一个找客户身上尝试过同样的创意。目的是为了演讲会做一个大的相板。
About a year ago, I tried a similar idea with portrait clients - the goal was to create an enlarged contact sheet from the session as the objective.
在找按摩师或理疗师之前，请尝试过几天不带钱包或手提包的日子。
Before you call the chiropractor or a physical therapist, try spending a few days without your wallet or purse.
和特里一样，曼西恩尼是切尔西青训培养出的球员，在踢中后卫之前，他曾尝试过很多位置。
Like Terry, Mancienne has been at Chelsea since he was a schoolboy, playing in a variety of positions before settling at central defence.
不过，按照艾伦的说法，盖茨之前就尝试过削减他在微软公司的股权比例，而且取得了成功。
Earlier efforts by Mr. Gates to whittle down his partner's stake in Microsoft were successful though, according to Mr.
不过，按照艾伦的说法，盖茨之前就尝试过削减他在微软公司的股权比例，而且取得了成功。
Earlier efforts by Mr. Gates to whittle down his partner's stake in Microsoft were successful though, according to Mr.
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