Open vent needle valve and bleed air from hose. Then close vent valve.

开启排气针形阀，并从软管排放空气。然后关闭排气阀。

youdao

Fill the syringe with solution, attach the needle and expel air.

注射器吸满漱口液，接上针头，排出注射器内空气。

youdao

A couple of harsh sentences from an old friend act like a needle in a balloon causing the air inside gush out at a great speed.

一个老朋友几句刻薄的话，就象一根针刺到了气球上，导致里面的空气迅速的排出。

youdao

Highly polished beveled edges reflect light in two directions for better legibility and emphasize needle-sharp tips, lending an air of Germanic precision.

FORBES: The Face of Time

The aircraft isn't complete quite yet, but barring unforeseen obstacles, like a run-in with a giant needle, it should be up in the air starting October 15th.

ENGADGET: US Air Force enlists super blimp for Blue Devil surveillance initiative

Flying at subsonic speed, the needle-nosed jet flew without passengers on Saturday from a military air base in Istres, near Marseille, and landed at Paris' Orly Airport.

CNN: Concorde compensation deal near