1. For each song, Wang recorded only the peak and trough of frequency in every 10-millisecond segment. 他将每一首歌切成以10毫秒为单位的区段，只录下其频率的波峰和波谷。
2. This paper derives the shaping curve equations in the transition section of the deep-trough belt conveyor for arranging the idlers reasonably. 对深槽胶带输送机过渡段的成形曲线方程进行推导，使之用作合理布置托辊的理论依据。
3. He disappeared into his tunnel, pushing the goose egg in front of him. He pushed and nudged till he succeeded in rolling it to his lair under the trough. 说完，它推着那枚鹅蛋消失在自己的通道里。它努力的往前推着那枚蛋，直到把它推进了自己那在威尔伯食槽底下的洞穴。
英英解释
n.
1. a narrow depression (as in the earth or between ocean waves or in the ocean bed)
2. a channel along the eaves or on the roof; collects and carries away rainwater
3. a concave shape with an open top
4. a treasury for government funds
5. a long narrow shallow receptacle
6. a container (usually in a barn or stable) from which cattle or horses feed
