They learn to roll over, support their heads, and even sit up while being held.

他们学会翻身、支撑头部，甚至在被抱着的时候坐起来。

youdao

And while you can certainly buy support contracts, it's really a roll of the dice as to who answers the phone when you call.

您当然可以购买支持合同，但是在您拨打电话时能否获得满意的答复，还得靠运气。

youdao

They then roll up the sheet and allow the cells to produce an interpenetrating mixture of structural support proteins, known as collagen and elastin.

之后将切片卷起促使细胞产生一种由结构支撑蛋白组成的混合物，即胶原及弹性蛋白。 纤维原细胞的问题在于它们会转化为平滑的肌肉细胞，最终将血管堵塞。

youdao

In the past week, the race to roll out networks that support 4G wireless broadband got even faster.

FORBES: Clearwire CTO Says Company Is "Setting Pace For Everyone Else"

Sales of the egg, a tradition started in 1996, support the Egg Roll.

FORBES: As Squabbles Over Budget Continue, Annual White House Easter Egg Tradition Rolls On

In recent years, Judge Roll gained bi-partisan support and respect for his tireless pleas for more resources for the federal judiciary, often telling legislators that many of his colleagues on the bench were overwhelmed with immigration and drug cases, attorneys said.

WSJ: Judge Remembered as Fair-Minded