1

在

zài

to exist; to be alive (of sb or sth) to be (located) at (used before a verb to indicate an action in progress)

2

這個

zhège

(pronoun) this (adjective) this

3

湖

hú

lake

=4

上

shǎng

used in 上声 shǎngshēng

=4

上

shàng

(bound form) up; upper; above; previous first (of multiple parts) to climb; to get onto; to go up to attend (class or university) (directional complement) up (noun suffix) on; above

5

滑冰

huábīng

to skate skating

6

安全

ānquán

safe; secure safety; security

=7

嗎

má

(coll.) what?

=7

嗎

mǎ

used in 吗啡 mǎfēi

=7

嗎

ma

(question particle for "yes-no" questions)