... salve 药膏 hold open 开着 relieve 救济 ...
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Hold-open device 枪栓固定卡榫
hold-open door 常开门
door hold-open device 保持门开启装置
door hold-open detection 保持门开启探测器
hold open the sack 把麻袋口撑开
hold-open catch 固定卡销
HOR Hold Open Rod 开位保持杆
hold-open operating lock 舱盖打开时的锁挡 ; 炮塔门开启状态固定销
Hold open pin 开口支撑销
Hold open an XMLHttpRequest connection until a response is received.
保持打开XMLHttpRequest连接，直到收到响应。
youdao
There is a courtyard which can be used to hold open-air events on the right side.
出展示空间右转是一个空的庭院，可以用来举办露天的活动。
Hold the door open.
让门开着。
Both stents are used to hold open arteries after they have been unclogged using a balloon, a procedure known as angioplasty.
FORBES: Studies Give Edge To J&J Stent
Stents are tiny metal mesh tubes designed to hold open clogged arteries, and they have revolutionized cardiac treatment within the last decade.
FORBES: A Big Win For Johnson & Johnson
Another benefit: The doors can improve the efficiency of trains because they make it more difficult for passengers to hold open train doors.
WSJ: Subway-Push Prevention Solution Would Be Very Costly for the MTA
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