1. though
2. although

1. to be (followed by substantives only)
2. correct; right; true
3. (respectful acknowledgement of a command) very well
4. (adverb for emphatic assertion)

1. safe period
2. safe days of a woman's menstrual cycle (low risk of conception)

1. but; yet; however; still
2. merely; only; just

1. as if
2. to seem like

1. neither
2. nor

1. representative
2. delegate
3. to represent
4. to stand for
5. on behalf of
6. in the name of

classifiers: 位, 個, 名

1. within the body
2. in vivo (vs in vitro)
3. internal to

1. ejaculation
2. to ejaculate

1. improbable
2. unlikely
3. will not (act, happen etc)
4. not able
5. not having learned to do sth
6. (coll.) (Tw) don't mention it
7. not at all

1. pregnant
2. to have conceived
3. gestation
4. pregnancy