1 a hundred answers to a single call (idiom)

2 to respond en masse

1 to react

2 to respond

3 reaction

4 response

5 reply

6 chemical reaction

7 classifier: 个 gè

1 surname Ying

1 to put to use

2 to apply

3 practical

4 applied (science, linguistics etc)

5 application

6 practical use

7 (computing) app

1 ought to

2 should

3 must

1 a hundred answers to a single call (idiom)

2 to respond en masse

1 to deserve what one gets (punishment, mishap etc) (idiom)

1 appropriate retribution (idiom)

1 lit. what the heart wishes, the hand accomplishes (idiom) skilled at the job

2 entirely in one's element

3 going smoothly and easily

1 to handle matters with ease (idiom)

2 to hold one's own