| 71. | The first records the arrival of longitudinal vibrations. |
| 首先记录下的是纵向波的到达；
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| 72. | The second marks the arrival of transverse vibrations which travel more slowly and arrive several minutes after the first. |
| 然后记录下的是横向波的到达，横向波比纵向波传播得慢，在纵向波到过几分钟后能到达。
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| 73. | On his arrival he crept up to his dressing-room with somewhat of a palpitating heart. |
| 他到家以后，悄悄走上楼，心头有点儿忐忑地进了更衣室。
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| 74. | I know nothing about the accident; it happened previous to my arrival here. |
| 事故发生在我到来之前，所以我对此一无所知。
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| 75. | His arrival was heralded with bugle blasts. |
| 喇叭声宣告他驾到。
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| 76. | Immediately on arrival at the office all employees have to book in. |
| 所有雇员一到办公室就必须签到。
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| 77. | They gave him a cordial welcome on his arrival . |
| 他到达时他们向她表示热诚的欢迎。
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| 78. | The idea of his arrival frightened me. |
| 想到他要来我就惊恐不安。
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| 79. | The news of his arrival was soon noised about. |
| 他到达的消息很快传开了。
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| 80. | It was thoughtful of you to warn me of your arrival . |
| 你来之前先通知我，真是考虑得很周到。
|