1 to grieve

2 to be broken-hearted

3 to feel deeply hurt

1 heart

2 innermost being

3 (math.) incenter

1 to be careful

2 to take care

1 heart

2 mind

3 intention

4 center

5 core

6 classifier: 颗 kē

7 classifier: 个 gè

1 what one has learned (through experience, reading etc)

2 knowledge

3 insight

4 understanding

5 tips

6 classifier: 项 xiàng

7 classifier: 个 gè

1 of one heart and one mind (idiom)

1 to do two things at once (idiom)

2 to multitask

3 to divide one's attention

1 lit. only one branch of the tree is thriving (idiom)

2 fig. to be in a league of one's own

3 outstanding

1 to set one's heart on sth (idiom)

1 in two minds about sth (idiom)

2 half-hearted

3 shilly-shallying