1.
sit, stand, hold oneself upright
危坐、 笔直地站着、 保持直立姿势
2.
He'd drunk so much he found it hard to remain perpendicular.
他喝太多了他发现很难保持直立。
3.
These fishes are soon able to hold themselves in a vertical position.
这些鱼类不久便能保持直立的姿式。
4.
In the end the trampolines should be in an upright position for at least three seconds.
结束时，运动员应保持直立至少3秒。
5.
It's important that your seat is in an upright position before takeoff and landing.
在飞机起飞和降落前，让你的座椅保持直立是很重要的。
6.
You are asked to remain seated with safety belts fastened and with seats in an upright position
请您留在座位坐好，并系好安全带，椅背保持直立位置，
7.
You are asked to remain seated with safety belts fastened and with seats in an upright position until the aircraft has come to a complete halt.
请您留在座位坐好，并系好安全带，椅背保持直立位置，直到飞机完全停稳为止。
8.
Carrying such a heavy bag, I almost could not keep my back straight all the times, walking liked an old woman, hehe.
背如此重的背包，我几乎无法让后背一直保持直立，走起来象个老太太似的，呵呵。
9.
A swiveling metal bar for holding a two-wheeled vehicle, such as a motorcycle, upright when not being ridden.
撑脚架一个可转动的金属条，以使两轮车（如摩托车）在不骑时可以保持直立
10.
Like the legs of a camera tripod, these bumps make an egg more stable and help keep it upright.
这些突起物就像照相机的三脚架，可以让鸡蛋更稳定，帮助它保持直立。
11.
maintaining an erect position.
保持一个直立的姿势。
12.
hold one's ground; maintain a position; be steadfast or upright.
保持自己的立场；保持某种姿势；坚定地直立着。
13.
Keep your seat in upright position during take off.
起飞时请保持座椅呈直立状态。
14.
Tie the tree to the top of the stick to keep it straight.
把树与木棍顶端拴在一起以保持其直立。
15.
In carrying out its functions, SMO maintains strict independence and impartiality at all times.
在职能运作方面，它一直严格保持独立性和公平性。
16.
In arm stand dive, on the other hand, the diver must be balanced and straight in a handstand before takeoff.
倒立起跳时，选手在起跳前必须用手支撑使身体保持平衡和竖直。
17.
not remaining rigid or straight.
不保持刚硬或不保持直的状态。
18.
careful to make the doorjamBs plumB.
小心让门框保持垂直