And, quite surprisingly, only 1 course mentioned XML, which was in an optional module.

还有相当奇怪的是，只有一个课程涉及XML，还是可选部分。

youdao

Optional modules may succeed or fail; PAM returns success or failure depending on whether any module eventually succeeds.

optional模块可以成功，也可以失败；pam根据模块是否最终成功返回success或failure。

youdao

The modular approach allows the soft-switching circuit to be designed as an add-on optional module to a standard inverter, which can convert a conventional inverter into a soft-switched inverter.

模块方法允许软开关电路被设计成标准逆变器的可选附加块，可以把传统的逆变器转变为软开关逆变器。

youdao

The Photosmart 2710 All-in-One combines a inkjet printer with a fax, copier, and scanner, and can print wirelessly using built-in 802.11g WiFi or an optional Bluetooth module.

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Features such as Advanced Theft Protection (ATP), a system platform that is resistant to deep-level hacking and the optional embedded Trusted Platform Module (TPM) help ensure that even if the STYLISTIC Q550 is lost or stolen, the data it carries remains protected.

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One final note for IT departments: Dell wants to make it easy for you to deploy their products at your company, and they offer a variety of optional enterprise services like Trusted Platform Module for BitLocker data encryption, static imaging and asset tagging, and custom images.

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