直立存放

stand upright───直立；突出

stay upright───保持直立

to upright───直立

bolt upright───笔笔直直

sit upright───坐端正；坐直

stage fright───怯场

stage right───上演权

Always store and use acetylene cylinders in an upright position to prevent loss of acetone which reduces the cylinder's ability to hold dissolved acetylene.───总是在垂直地储存和使用钢瓶，以防止丙酮的损失，导致钢瓶容纳溶解的乙炔的能力下降。

Store your toothbrush in an upright position, if possible, and allow it to air dry until using it again.───如果可以，请将牙刷头朝上竖立摆放，并自然风干，以备下次使用。