1 (slang) very close same-sex friend

2 gay partner

1 base (of operations)

2 industrial or military base

3 al-Qaeda

1 basic

2 fundamental

3 main

4 elementary

1 base

2 foundation

3 basis

4 underlying

5 classifier: 个 gè

1 to change

2 to alter

3 to transform

4 to correct

1 complete change from the old rut (idiom); dramatic change of direction

2 a volte-face

3 to change old practices

1 to change one's plan all of a sudden (idiom)

1 change of string, move out of rut (idiom); dramatic change of direction

2 to dance to a different tune

1 to reform and start afresh (idiom); to turn over a new leaf

1 to mend one's ways (idiom)

2 to turn over a new leaf