英語翻譯To be sure,WeChat faces an uphill battle in the U.S.,whe

題目：

英語翻譯
To be sure,WeChat faces an uphill battle in the U.S.,where it will have to take on well-known local competitors such as Facebook's messenger app,WhatsApp and Snapchat,just to name a few.
翻譯：誠然,微信在美國面臨一場艱巨的戰鬥.僅舉幾個例子,它在美國必須應對Facebook的消息應用、WhatsApp和Snapchat等知名美國競爭對手.

解答：

take on 的確有這個意思.柯林斯高級英漢雙解中的解釋如下：
與(尤指實力比自己強的人)較量;接受…的挑戰 If you take someone on,you fight them or compete against them,especially when they are bigger or more powerful than you are.