名词
1. He lived in Canada in the thirties.
三十年代他住在加拿大。
保险
A：Here. Take these pills (three times/ twice/ ten times) every (day/ an hour/ thirty minutes).
这个，这种药每（天/小时/半小时）服用（3次/两次/10次）。
B：Does my insurance cover them?
是由保险金支付吗？
1. (数字) 30
Thirty is the number 30.
2. 三十多，三十几(指 30 至 39 之间的数字)
When you talk about the thirties, you are referring to numbers between 30 and 39. For example, if you are in your thirties, you are aged between 30 and 39. If the temperature is in the thirties, the temperature is between 30 and 39 degrees.
e.g. Mozart clearly enjoyed good health throughout his twenties and early thirties.
显然，莫扎特在二十几岁到三十刚出头时，身体非常好。
3. 三十年代(指 1930 年至 1939 年)
The thirties is the decade between 1930 and 1939.
e.g. She became quite a notable director in the thirties and forties.
她在三四十年代成了一位名导演。
1. (数字) 30
Thirty is the number 30.
2. 三十多，三十几(指 30 至 39 之间的数字)
When you talk about the thirties, you are referring to numbers between 30 and 39. For example, if you are in your thirties, you are aged between 30 and 39. If the temperature is in the thirties, the temperature is between 30 and 39 degrees.
e.g. Mozart clearly enjoyed good health throughout his twenties and early thirties.
显然，莫扎特在二十几岁到三十刚出头时，身体非常好。
3. 三十年代(指 1930 年至 1939 年)
The thirties is the decade between 1930 and 1939.
e.g. She became quite a notable director in the thirties and forties.
她在三四十年代成了一位名导演。
