You must arrive before the first bell rings.
你必须在第一次上课铃响之前到达。
The first bell is the tardy bell.
第一个铃是慢的铃。
Is this the first bell or the second?
这是预备铃还是上课铃？
The first bell ringing is the symbol of Chinese New Year.
第一次钟声是春节的象征。
The first bell began to ring, and then the others chimed in.
第一口钟开始敲响，接着其他的钟就应合起来了。
The first bell started to ring, and then the others chimed in.
第一个钟声响起，其他钟接着奏出和谐的乐声。
The first bell was already ringing before she got to the school gate.
她走到学校大门之前，头遍铃已经响了。
Students should arrive at school no more than 30 minutes before the first bell.
学生在第一节上课铃声响之前提前超过三十分钟入教室是不允许的。
That's a full hour later than in years past, when the first bell sounded promptly at 8.
这比过去几年晚了整整一小时，以前8点就准时响起第一次铃声。
The first bell was made and tested on the ground in 1857, but a four-foot crack developed and the bell had to be cast again.
1857年制造的第一只钟在地面实验时，发现钟体上有一条四英尺长的裂缝，只好重铸钟。
In both cases, the officials say parents have the option to drop their kids off at school before the first bell so they can eat breakfast, charge their devices, or just hang out.
在这两种情况中，校方表示家长们可以选择在学校第一次响铃之前就把孩子送来，这样他们可以有时间吃早饭，为电子设备充电或者四处走走。
I had just enough time to finish eating before the bell rang and I was off to my first class.
我在铃响前刚好有时间吃完，然后就去上第一节课了。
The French came here early, and Madagascar's first church, built in 1837, still stands, its red bell tower rising out of the leafy forest.
法国人很早就来到这里，马达加斯加的第一个教堂建于1837年，至今仍完好，红色的钟塔树立在丛里之中。
The first voice to travel over a wire was even a surprise for its inventor. Alexander Graham Bell.
通过电线传送的第一个声音，甚至使它的发明人亚历山大·格雷厄姆·贝尔都感到惊讶。
The bell for the end of first period rang then.
第一节课结束的铃声响了。
She walked into my room without bothering to ring the bell first.
她连先按下门铃都懒得按一下就走进了我的房间。
Bell had decided that the first words over his phone should be from Shakespeare.
贝尔决定，他通过电话说的第一句话应当来自莎士比亚。
These experimentations eventually resulted in Bell being awarded the first U.S. patent for the telephone in 1876.
这些实验最终导致后来贝尔获得了1876年第一个美国的电话专利。
During one of the first public demonstrations of the "Bell Solar Battery" the device powered a small radio transmitter, carrying both speech and music.
最初的公开示范之一便是将一台小型无线电发射器装上“贝尔太阳能电池”，传送讲话与音乐。
Alexander Graham Bell in 1882, shortly before fighting the first audio war with Edison. Photo: Wikicommons.
1882年，即将与爱迪生开始第一场音响设备大战的亚历山大·贝尔。
I arrived in my classroom ten minutes before the bell rang, just as the first of my students trickled in.
铃响前十分钟我提前到了教室，最早的那批学生正陆陆续续进来。
And I am very pleased to say within the first 30 days doing business, that bell got annoying.
让我很有成就感的是开张不到30天铃声就开始响个不停了。
Motorola had beaten Bell to become the first company to make personal cell phones work.
摩托罗拉已经打败贝尔成为第一个生产手机的公司。
The first machine to dispense COINS as prizes was the three-reeled Card Bell, built by Charles Fey in 1898.
第一个中奖便吐硬币的机器是“三转轴卡片叮当机”(three -reeled Card Bell)，由查尔斯。费于1898年发明。
Also on display for the first time is a section of the radio telescope which radio astronomer Jocelyn Bell used to discover pulsars - small, fast-rotating stars - in the 1960s.
展览还首次展出了20世纪六十年代射电天文学家Jocelyn Bell发现高速运转的小恒星-脉冲星时所使用的射电望远镜。
Also on display for the first time is a section of the radio telescope which radio astronomer Jocelyn Bell used to discover pulsars - small, fast-rotating stars - in the 1960s.
展览还首次展出了20世纪六十年代射电天文学家Jocelyn Bell发现高速运转的小恒星-脉冲星时所使用的射电望远镜。
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