公鸡 gōng jī 振 zhèn 翅 chì 啼叫.

The cock clapped his wings and crowed.

在 zài 波峰 bō fēng 与 yú 波谷 bō gǔ 重合 chóng hé 之处,总 zǒng 振幅 zhèn fú 实际上 shí jì shàng 为 wéi 零 líng .

Where a trough and crest coincide we get the total amplitude zero.

因此 yīncǐ ,这种 zhè zhǒng 现象 xiànxiàng 称为 chēng wéi “ 油 yóu 膜 mó 振荡 zhèn dàng ” 或 huò “ 共振 gòng zhèn 涡 wō 动 dòng . ”

This phenomenon is therefore known as'oil whip'or'resonant whirl '.

海燕从 Cóng 遥远 yáoyuǎn 的 de 地方 dìfāng 振翼飞来.

The petrel came winnowing in from afar on the sea.