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- The boom telescoping mechanism is shown as follows. 吊臂伸缩机构如下图所示。
- Over time, even without being granted dedicated telescope time, the piggy back SETI receiver managed to scan the entire sky visible from Arecibo. 随时间流逝，即使没有获得专门的望远镜时间，附加式的SETI接收器也能扫描完整个天空。
- In the beginning, the difficulty for Perlmutter's group lay in obtaining telescope time, always precious in the astronomical community. 刚开始，珀尔穆特团队的困难在于争取望远镜的观测时间，这在天文学界来说通常挺珍贵的。
- Stand clear of the swinging boom of the crane. 不要走近转动的超重机吊杆。
- Because it is so hard to acquire sufficient telescope time for a sky survey, SETI observations at Arecibo were conducted up to now in the in the piggy-back mode. 因为很难得到充足的望远镜使用时间进行全天调查，如今SETI在阿雷西博的观测采取的是一种附加式的模式。
- Telescoping of the boom is carried out through telescoping cylinder and steel cable, and all booms telescope simultaneously. 吊臂的伸缩是通过伸缩油缸和钢丝绳进行,各伸缩臂同步伸缩。
- Fruit juices ferment if they are kept a long time. 果汁若是放置很久，就会发酵。
- Time is sometimes called the fourth dimension. 时间有时被称为第四度空间。
- I think the work can be completed ahead of time. 我认为这项工作能提前完成。
- He will come on time even though it rains. 即使下雨，他还是会准时来的。
- Reading occupies most of my free time. 阅读占去了我大部分的闲暇时间。
- In the competitive environment that governs telescope time allotments, no group by itself would be granted sufficient telescope time to conduct an efficient sky survey. 相互竞争望远镜的支配时间，没有小组能得到充足的使用时间实施直接的全天区调查。
- He made his pile during the property boom. 在房地产生意兴隆期间他发了大财。
- The clock began to boom out twelve. 时钟开始敲十二点。
- I need some time to orient my thinking. 我需要一些时间来使我的思想适应。
- The long boom of the crane functions like our arms. 起重机的长臂与我们的手臂功能相同。
- Profit multiply in the boom year. 兴旺之年利润增长。
- A transistorize radio takes no time to warm up. 晶体管收音机不需要预热时间。
- The boom of the airplane was damaged. 飞机的尾桁受到损害。
- We heard a hollow boom of thunder. 我们听到低沈的隆隆雷声。
