a-ladder with platform 人字绝缘梯
To set a ladder 架梯子
Girl With A Ladder 女孩和梯子
unhitch a ladder 脱开梯子
turn a ladder 翻转梯子
tilt a ladder 使梯子倾斜
shorten a ladder 缩合梯子
spotting a ladder 部置消防梯
erect a ladder 竖起梯子
Two men were on the bridge-deck, steadying a ladder.
两人站在船桥甲板上,扶稳一个梯子。
With the help of a ladder, neighbours were able to rescue the children from the blaze.
邻居们借助一把梯子把孩子们从大火中救了出来。
给我找一架梯子!
Alina from China sent us this proverb: "He who would climb a ladder must begin at the bottom."
VOA: special.2009.03.01
It's a ladder used to ascend a tree, it's a kind of tool of ascent that's a kind of a tool for getting fruit.
这是用来爬上树的梯子,是一种上升的工具,也是用来摘果子的。
This represents the upright struts on a ladder that I showed you before, it represents this backbone that's shown by - that's formed by polymerizing the pentose's together through phosphate's always going 5' to 3', 5' to 3'.
线条代表梯子,上下的支柱 之前给你们演示过,代表由多聚戊糖分子,通过磷酸基从5'端向3'端方向,连接起来的主链
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