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渋滞， じゅうたい
1. (traffic) congestion, traffic jam, gridlock
2. delay, stagnation
(交通)阻塞
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なければ， 無ければ
1. if (it) doesn't exist, if there is no ..., if (one) doesn't have ...
2. if not ..., unless ...
3. have to ..., must ...
tbd
が
1. indicates the subject of a sentence
2. indicates possession
3. but, however, (and) yet, though, although, while
4. and
5. used after an introductory remark or explanation
6. regardless of ..., whether ... (or not), no matter ...
7. indicates a des...
tbd
