B-1s
【航空学】美国空军于1974年首次飞行的远程超音速轰炸机；【军事】(美制)B—1轰炸机
🗣️ 情景例句
Here is our draft contract.
这是我们草拟的合同。
We offer a life-time guarantee.
我们提供永久保证。
The early climbers were looking for the easiest way to the top, because the summit was the prize they sought, especially if it and never been attained before.
早期登山者所寻找的是通往山顶的最方便的途径，因为顶峰特别是前人未曾到过的顶峰 -- 才是他们寻求的目标。