This allows you to open and close portals at runtime.

这允许你实时打开和关闭入口。

youdao

A single "door" shutter wouldn't be able to open and close this fast.

单一的“门窗”是无法再这样的高速下完成开启——闭合这一整套动作的。

youdao

Similar to BPMN, EPCs use the same rule symbols to open and close branches in the process flow.

与 BPMN 类似的是，EPC 也使用相同的规则符号来打开和关闭流程流中的分支。

youdao

(It's more that problems make us think.) (SAYING) Koesmayadi says he is lucky to have such a close family at Rumah Cemara, and he will keep its doors open to those in need.

VOA: standard.2010.04.01

I can have functions with no parameters, that's fine, I will still need the open and close paren there to identify that I have no parameters.

我每次都需要进行输入码？,函数可以没有参数,我依然需要前后括号,来定义我没与参数。

麻省理工公开课 - 计算机科学及编程导论课程节选

you could characterize them in terms of how they're gated, -- and basically how they open or close -- that's one way to talk about different types.

你可以通过闸门的类型来描述它们，这基本上也就是看它们是如何打开或关闭的-,这是一种讨论不同类型的方法。

麻省理工公开课 - 化学原理课程节选

It's an overhead valve engine with a single camshaft that uses push rods to open and close the 16 valves.

FORBES: The Engine That Could

Zippers offer security, at the cost of added effort to open and close them (not to mention the risk of snagged scarves).

WSJ: Wanted: Satchel to Carry Everything

Founded in 1992, the firm's unique product features a hinged design that allows the ring to open and close easily, safely, and securely.

WHITEHOUSE: The American Jobs Act Will Put Pennsylvanians Back to Work