Then, when the blood runs low on calcium, a signaling device called the parathyroid gland can activate a process by which calcium is taken from the skeleton and put back into the blood.

那么，当流动的血液中钙含量过低，一个叫做甲状旁腺的发信号装置就会激活一个流程，致使骨骼中的钙流失到血液里。

youdao

Activate the upgraded node and configure it to accept incoming requests (for example, add it back to the load balancer's routing table).

激活升级后的节点并进行配置使其能接受外来的请求(例如，将其重新添加到负载平衡器的路由表中)。

youdao

If you need to uninstall Windows 7 and go back to your previous version of Windows, you can activate it using the original product key.

如果需要卸载Windows 7，回到原来的Windows版本，可以用最初的序列号激活。

youdao

The carriers say they want to encrypt and store the credentials in the phone's SIM card, the small chips placed in the back of phones to activate access to mobile networks.

WSJ: RIM, Carriers Fight Over Digital Wallet

Making us mangle wire hangers to activate blindly some tiny reset hole in the back?

ENGADGET: Switched On: Jane, Stop This Crazy Thing

By contrast, Apple allows up to five computers to access protected content, so I activate and de-activate the machines I want to use and if for some reason a machine crashes and takes an activation with it, I can de-activate all my computers and get my licenses back.

ENGADGET: Entelligence: Have we demonized DRM?