Plumb also points out that he needed many kinds of parachutes when his plane was shot down over enemy territory — he needed.

帕朗柏也指出当他的飞机在敌人领空被打下来时，他需要各种不同的降落伞：物质的降落伞、精神的降落伞、情感的降落伞和心灵的降落伞。

youdao

They plumb the depths down to 600 meters, in temperatures to one degree centigrade, and this is why you see them on the surface — it's so cold down there.

它们垂直下降可达600米，那里的温度仅1摄氏度，这也是为什么会看到它们在海面的原因，那下面太冷了。

youdao

Adopts four-column and three-plate structure, the active placte paralleling with the working surface in high precision, four precise guide sleeves leading to highly precise down-pressing plumb;

采用四柱三板式结构，活动板与工作面平行精度高，四个精密导套使下压垂直精度高；

youdao

The Ice Dragon, a modified Seaglider operated by the Virginia Institute of Marine Science, has explored under the Antarctic ice shelf, and another modified Seaglider, the Deepglider, can plumb the depths down to 6km (20, 000 feet).

ECONOMIST: Fleets of robot submarines will change oceanography