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at first：开始

在题干的"句子1"中,我们不认识bystander's account这个东西也没有关系,我们可以了解到这个东西刚开始(at first)看起来很XXX. 在"句子2"中,我们读到警察发现它很YYY. 于是我们用中心结构词although把句子1和句子2串起来就是"虽然某东西刚开始很XXX,

at first：首先,开始的时候

at first 首先,开始的时候; | at large未被捕获的,大多数; | at last 终于,最终;

I was picked first for kick ball teams at recess：下课后我被选为棒球队的第一选手

make up: v.补足,拼凑 | 5:I was picked first for kick ball teams at recess. 下课后我被选为棒球队的第一选手. | at recess: 在休息时间

at the first opportunity：尽快

at the risk of 冒......的危险 | at the first opportunity 尽快 | at the hands of 出自......之手

at the first opportunity：还是尽快

But if he knows who I really am, then 但是如果他知道了我的身份的话 | At the first opportunity 还是尽快... | I need to take care of him 我需要处理掉他

at the first opportunity：第一时间

financial incentive=奖金, | at the first opportunity:第一时间 | refusal to participate:拒绝参与

ready to take charge at the first opportunity：准备好把握第一次机遇

Well, good. He sounds like a young man|很好 他听起来像个初出茅庐... | ready to take charge at the first opportunity.|准备好把握第一次机遇 | Then, you had better master the rules of the game|那么 你最好熟...

at the first opportunity = as soon as possible：尽快

77 wind up 结果...,最后(陷入某种状态) | 78 at the first opportunity = as soon as possible 尽快 | 80 give birth to 引起,使发生

lantern festival at the first full moon：上元燒燈

language 言语 | lantern festival at the first full moon 上元烧灯 | lapis lazuli 瑠璃

Immersed at the level of holes in first row：浸没深度在第一排孔处

水平线 Horizontal level | 浸没深度在第一排孔处 Immersed at the level of holes in first row | 放油螺钉 Oil drain screw

French Fifth Republic：法蘭西第五共和

Freight rate 运费率 | French Fifth Republic 法兰西第五共和 | Frequency 次数;频率

cartographic communication：地图传输 地図通信

■ cartographic analysis 地图分析 地図分析 | ■ cartographic communication 地图传输 地図通信 | ■ cartographic data 制图数据 地図データ