ensure造句
The drill should be slowly rotated to
ensure a clean hole.
钻头必须缓慢转动，以保证钻孔平整光滑。
Goldsmith has repaired the roof to
ensure the house is wind-proof.
戈德史密斯修理了屋顶，以确保房屋能够抗风。
Ensure that the frame is securely fixed to the ground with bolts.
确保用螺栓把框架牢牢地固定在地面上。