-----------------------------------

兵士， へいし

1. soldier

tbd

more...           more words...

-----------------------------------

しばしば， 屡々， 屡屡， 屡， 数数， 数々， 数

1. often, again and again, frequently, repeatedly

tbd

more...           more words...

-----------------------------------

危険， きけん

1. danger, peril, hazard 2. risk

危险；风险

more...           more words...

-----------------------------------

なければならない， なければなりません， なければいけない

1. have to do, must, should, ought to

必须，应该

more...           more words...

は

1. indicates sentence topic 2. indicates contrast with another option (stated or unstated) 3. adds emphasis

指示句子的主题；表示与另一选项（无论是否明确提及）形成对比；表示强调

详情...

に

1. at (place, time), in, on, during 2. to (direction, state), toward, into 3. for (purpose) 4. because of (reason), for, with 5. by, from 6. as (i.e. in the role of) 7. per, in, for, a (e.g. "once a month") 8. and, in addition to 9. if, although

tbd

详情...