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这
(pronoun) this; these; (bound form) this; the (followed by a noun); (bound form) this; these (followed by a classifier) (in this sense, commonly pr. zhèi, esp. in Beijing)
是
to be (followed by substantives only); correct; right; true; (respectful acknowledgement of a command) very well; (adverb for emphatic assertion)
我
I; me; my
第一次
the first time; for the first time
来
to come; (used as a substitute for a more specific verb); hither (directional complement for motion toward the speaker, as in 回来 (huílai)); ever since (as in 自古以来 (zìgǔyǐlái)); for the past (amount of time); (prefix) the coming ...; the next ... (as in 来世 (láishì)); (between two verbs) in order to; (after a round number) approximately; (used after 得 (dé) to indicate possibility, as in 谈得来 (tándelái), or after 不 (bù) to indicate impossibility, as in 吃不来 (chībulái))
中国
China