1 thousand

1 ten million

2 countless

3 many

4 one must by all means

1 magnificent army with thousands of men and horses (idiom); impressive display of manpower

2 all the King's horses and all the King's men

1 myriads

2 hundred billion

1 lit. by the thousands and tens of thousands (idiom); untold numbers

2 innumerable

3 thousands upon thousands

1 a single slip may cause everlasting sorrow (idiom)

1 one word worth a thousand in gold (idiom)

2 (in praise of a piece of writing or calligraphy) each character is perfect

3 each word is highly valued

1 lit. stake a thousand pieces of gold on one throw (idiom); to throw away money recklessly

2 extravagant

1 lit. one day, a thousand miles (idiom); rapid progress

1 lit. to drop a thousand zhang in one fall (idiom)

2 fig. (of business, popularity etc) to suffer a sudden, devastating decline

3 to take a dive