Traveler 4: Yes. I have been to Washington, D. C. I'm from Baltimore. Yes. I have sailed on a ship. The Fast Frigate. The Navy Fast Frigate.

游客4：是的，我去过华盛顿特区，我从巴尔的摩来。是的，我乘船航行过，乘的是“快舰号”。海军“快舰号”。

youdao

Traveler 4: Yes. I have been to Washington, D. C. I'm from Baltimore.

游客4： 是的， 我去过华盛顿特区。我从巴尔的摩来。

youdao

Five triterpenoids were isolated and their structures were identified to be cauloside C (1), akebiasaponin D (2), akebiasaponin F (3), ursolic acid (4) and hederagenin (5).

分离鉴定了5个三萜类化合物：葳岩仙皂苷C（1）、木通皂苷D（2）、木通皂苷F（3）、 熊果酸（4）和常春藤皂苷元（5）。

youdao

Today we tell about 4 more individuals who are making a difference in the city of Washington, D.C.

VOA: special.2009.01.28

Again I should have said first, index 0, the first one. I can similarly go in and say I'd like all the things between index 2 and index 4. And again, remember what a b c that does. Index 2 says start a 0. 1, 2. So a, b, c.

我还是要说一遍，索引为0的元素，是第一个元素，我可以要求返回索引,2和4之前的所有元素，请记住2,是从0开始的,那么0，1，2对应的是。

麻省理工公开课 - 计算机科学及编程导论课程节选

In 2009, when assigning grades for 15 sectors of America's infrastructure, the American Society of Civil Engineers awarded 11 D's and 4 C's.

CNN: America isn't ready for superstorms

The Devils are without C Dainius Zubrus (wrist surgery, 2-4 weeks), D Henrik Tallinder (lower body, injured reserve), RW Ilya Kovalchuk (sprained shoulder, indefinite), LW Alexei Ponikarovsky (lower body, indefinite).

WSJ: Senators top Devils in shootout