你好，高兴帮助你。
请采纳，谢谢！！！
用at造搜趣网句：
He rests at home.
他在家休息。
I picked Lucy up at the airport yesterday.
我昨天在机场接了露西。

1. We didn't trust him at first, but his charming manner completely disarmed us.
我们开始时并不信任他，但他令人愉快的举止完全消除了我们的疑虑。 搜趣网

2. At first he refused to accept any responsibility but he ended up apologizing. SMzQCxng
最初他拒不承认有任何责任, 到头来还是道了歉.

3. At first we used hand tools.
首先我们使用手工工具。

At the age of ten,he can speak English fluently搜趣网.
The apple tree is in fron搜趣网t of our house.

I smiled at them and grimaced 我朝她们笑笑并做了个鬼脸
Several factors are at work 成因存在于几方面