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- As spermatozoa progress through the epididymis they first acquire the capacity to phosphorylate tyrosine on targets on the principal piece, followed by the midpiece. 精子进入附睾后，它首先获得将精子主段以及中段上的目的蛋白的酪氨酸磷酸化的能力。
- Carved between the late Tang and Qing dynasties, principal pieces emerged from the hands of Song dynasty craftspeople. 该石刻开凿于晚唐到清代，大部分成像于宋代工匠之手。
- He bit off a large piece of the apple. 他咬下一大块苹果。
- I need a piece of string to tie this parcel up. 我需要一根细绳把这包裹扎起来。
- My wages are the principal source of my income. 薪金是我收入的主要来源。
- She was hit by a piece of falling masonry. 她被建筑物上落下的一块石头砸着了。
- The principal shareholder ask for a meeting. 主要股东们要求召开会议。
- The agent spoke on behalf of his principal. 代理人代表他的委托人说话。
- Keys are available on application to the principal. 向校长申请就可得到钥匙。
- The boy is daubing a piece of paper with red ink. 那孩子正在用红墨水在纸上乱涂。
- This piece of glass seems to be part of a lamp. 这片玻璃似乎是一盏灯的一部分。
- She's been downgraded (from principal) to deputy. 她已(从校长)降为副校长。
- Our principal problem is lack of time. 我们的主要问题就是缺少时间。
- Would you please give me a piece of paper? 能给我一张纸吗？
- I think I can do with one more piece. 我想我还能再吃一块。
- She drank in every word of the principal's lecture. 她全神贯注地听校长演讲的字字句句。
- She tore off a piece of music and then went out. 她匆匆演奏了一支曲子就走出去了。
- John informed the principal against Paul. 约翰向校长告发了保罗。
- Keep that piece of wood; it may come in useful. 留着那块木头，它可能会有用的。
- The house is now something of a museum piece. 这座房子现在几乎可以说是珍贵文物了。
