1

他們

tāmen

they; them

2

早就

zǎojiù

already at an earlier time

3

認識

rènshi

to know to recognize to be familiar with to get acquainted with sb knowledge understanding awareness cognition

=4

了

le

(completed action marker) (modal particle indicating change of state, situation now) (modal particle intensifying preceding clause)

=4

了

liǎo

to finish (used with 得 dé or 不 bù after a verb to express (im)possibility, as in 忘不了 wàngbuliǎo "cannot forget") (literary) (usually followed by a negative such as 無 wú or 不 bù) completely (not); entirely (not); (not) in the least to understand clearly (variant of 瞭 liǎo)

=4

了

liǎo

(of eyes) bright clear-sighted to understand clearly

=4

了

liào

unofficial variant of 瞭 liào

=5

嗎

má

(coll.) what?

=5

嗎

mǎ

used in 嗎啡 mǎfēi

=5

嗎

ma

(question particle for "yes-no" questions)