It's possible to misjudge the depth of a cut, making it so deep that it requires stitches (or, in extreme cases, hospitalization).

有可能对切削深度产生误判，以至于割得如此之深，需要缝合(或者在极端情况下需要住院)。

youdao

Yet even at great depth, the mantle remains an exceedingly viscous fluid, flowing ever so slowly even in response to extreme pressures.

然而即使在极深处，地幔仍保持非常粘滞的液态，即使是在极度的压力下流动也十分缓慢。

youdao

It just became possible, thanks to a laser camera developed by physicists at Heriot Watt University in Edinburgh, UK. You can pretty much see how it works from the images above -- laser beams are bounced off the target and the duration of their return journey is measured precisely enough to detect millimeter depth changes even at extreme distances.

ENGADGET: Laser scans objects in 3D from half a mile away, scientists just need reason to use it

The floatable bags operate in extreme temperatures of -22F to 140F and protect against water submersion for 30 minutes at a depth of 1 meter, also designed with room to accommodate a few small items such as credit cards, bandages, etc.

ENGADGET: SpareOnePlus adds location tracking, audio alerts, keeps the 15-year life on a single AA battery eyes-on