| 铤而走险 | tǐng ér zǒu xiǎn | to take a risk out of desperation (idiom) |
| 1 | We need a short drill collar. | |
| 2 | Connect the feeling plate to the drill collars . | |
| 3 | The drill collars must be made of nonmagnetic material. | |
| 4 | Never reverse rotary table into the DC or any tubular when making up connections. | |
| 5 | Have you measured those spiral collars and flex joints? |