The usual first sign may be either cold symptoms or a headache.See Usage Note at and / or, either, neither, nor
通常第一信号不是感冒症状便是发烧头痛参见，，，
His father served in signal corps during the FirstWorld War.
他父亲在第一次世界大战中在一个信号团工作。
A Study on the Amplitude Extraction Algorithm of the First Heart Sound;
心音信号的第一心音幅值提取算法的研究
The other host of signal are control signals.
另一组信号是控制信号。
If such measures happen, they would be the first clear sign that Raú l is more than just his brother's keeper.
如这些措施得以实施，这将是第一个明确的信号，这个信号说明劳尔不只是他哥的替身。
Thank you for your letter of Credit No.5678 for your Order No. 100.
感谢您对贵方第100号订单所开的第5678号信用证。
Your L/C No.556 covering your Order No.50 has been received.
已收到有关贵方第50号订单的第556号信用证。
clients first, reputation first
客商第一，信誉第一
Would the signal box be the first place the train stopped at after it left Liverpool?
那个信号房是不是火车离开利物浦后第一个停车站？
The first signal did not include the color yellow for caution, but that was later added within a few years.
第一次信号中不包括用于“注意”的黄色，黄色是以后几年内后加的。
This Credit is issued subject to Uniform Customs & Practice for Commercial Documentary Credits Publication No. 500.
本证系根据信用证统一惯例>第500号出版物所开立。
The only smoke we get is when the Indians start signaling each other.
只有当印第安人互相发送信号时我们才能见一点烟雾。
picked up our first broadcasts of the 1920's,
接收到了我们二十世纪二十年代的第一次广播信号，
Some of the clause in your l/c no. 18 is not in agreement with those of the contract.
你方第18号信用证中的一些条款与销售合同的规定不符。
Some of the clauses in your L/C No.57141 are not in agreement with the stipulations of the S/C.
你方第57141号信用证中的一些条款与销售合同的规定不符。
Group Ⅰ Metabotropic Glutamate Receptors are Involved in the Activation of Peripheral Nociceptors;
第一组代谢型谷氨酸受体在外周痛信号产生中的作用
Study on the Schemes and Signal Processing of the Intelligent Underwater Acoustic Decoy with the Transmitting-while-receiving Function of Class One
智能声诱饵第一类边发边收方案及信号处理技术研究
Section 5 provides an overview of switching by signal type.
第5章根据信号类型概要介绍了信号的切换。