上下

A little bird was bobbing its head up and down.

一只小鸟把头上下快速摆动着。

The cork on his fishing - line was bobbing up and down on the water.

他钩丝上的浮子在水面上下急动。

A one-piece garment for a woman; has skirt and bodice.

女子穿的上下连在一起的衣服；包括裙子和胸衣。

The molecules of air would bombard all sides and both ends of the cylinder.

空气的分子会撞击圆筒的整个筒壁和上下两端。

Neither can be adequately conveyed in the context of book review.

任何一个都不能在书评的上下文中得到充分的表达。

The air is stifling and her breath is boozy.

钢琴踏板在僵硬地、机械地上下移动，这是一种疯狂的、徒劳无功的运动，像花了二十六年时间堆起来的一堆大粪，不过却是准时完工的。

He is committed to a bottom-up model with, he says,"teachers teaching, kids learning."

他说，他负责建立了一个"教师授课，孩子学习"的上下型模型。

In a later Boulton and Watt engine, dating from 1788, the up and down motion of the beam was converted into a rotary motion .

1788年，瓦特和波尔顿将上下移动的吊杆改装成旋转式的。

A VariableReference evaluates to the value to which the variable name is bound in the set of variable bindings in the context.

变量引用的值是上下文中的变量绑定集合中变量名被绑定上的那个值。

With the help of the optimization theory, we present the vertex solution theorem for determining both the exact upper bounds or maximum values and the exact lower bounds or minimum values of the dynamic response of structures, in which these parameters reach their extreme values on the boundary of the interval mass, damping, stiffness matrices and the interval external loads vector.

借助于优化理论，提出了确定结构动力响应精确上下界的极点求解定理，其中极值将在区间质量矩阵、阻尼矩阵、刚度矩阵和外载荷列向量的顶点达到。

Singer Leona Lewis and former Led Zeppelin guitarist Jimmy Page emerged as the bus transformed into a grass-covered carnival float, and the pair combined for a rendition of "Whole Lotta Love".

歌手leona刘易斯和前率领的飞艇的吉他手吉米页出现巴士转化为基层所涵盖的嘉年华花车，和一双合并为一移交&整个lotta爱&。

This is Kate, and that's Erin.

这是凯特，那个是爱朗。