בְּעִדָנָא הַהִיא אַכְנֵישׁ יַתְכוֹן וּבְעִדָנָא הַהִיא אֲקָרֵיב גָלוּתְכוֹן אֲרֵי אֶתֵּן יַתְכוֹן לְשׁוּם וּלְתוּשְׁבְּחָא בְּכָל עַמְמֵי אַרְעָא כַּד אָתֵיב יַת גָלוּתְכוֹן לְעֵינֵיכוֹן אֲמַר יְיָ.
1. and at that time | וּבָעֵת – Literally: "and at the time", but see Ibn Ezra that the word "הַהִיא" (that) from the beginning of the verse should be applied here as well.
2. a praiseworthy name | לְשֵׁם וְלִתְהִלָּה – This translation is reading this phrase as a hendiadys (a pair of words joined by a conjunction which convey a single idea). The full clause literally reads: "I will set you as a name and a praise", i.e. "I will make you renowned".
3. When I restore your fortunes | בְּשׁוּבִי אֶת שְׁבוּתֵיכֶם – See Shadal on Devarim 30:3 that "שְׁבוּת", like "בְּשׁוּבִי", stems from the root "שוב", to return, and that the idiom means "to restore something to its original condition". Compare such usage in Iyyov 42:10 and Yechezkel 16:53. Alternatively: "when I bring back your captives/exiles", understanding "שבות" to stem from the root "שבה", to take captive (Metzudat Zion)