His thoughts wandered off on another tack.
他离开了原来的思路。
He would just cut off lengths of canvas and tack them to the wall. When a picture was finished, he cropped off any remaining blank canvas.
每次创作时只能剪块帆布，钉在墙上，完成后还要把空白的画布裁下来，留着备用。
The invention could take high temperature compensate with chaff protruding tack to take normal on-off action under high temperature environment or large load.
与现有技术相比，本发明利用托片凸钉进行高温补偿，使得光控器在高温环境或大负载的情况 下，仍能进行正常的开关动作；
SALESPERSON: Then, after you sand it, you use tack cloth to wipe off any dust or sawdust.
店员：然后磨好之后，用有黏性的布擦掉灰尘和木削。
SALESPERSON: Then, after you sand it, you use tack cloth to wipe off any dust or sawdust.
店员：然后磨好之后，用有黏性的布擦掉灰尘和木削。
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